1. SolvE using Ratios and Proportions
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3.6: Solve using Ratios and Proportions

2. 3.6: Solve using Ratios and Proportions
Review
Prove that
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3. Steps using Cross Products
If the question is written as a fraction, think of “cross-multiply butterfly”
Simplify the equation
Solve
Check
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3.6: Solve using Ratios and Proportions

4. 3.6: Solve using Ratios and Proportions
Example 1
Solve
x = 20
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5. 3.6: Solve using Ratios and Proportions
Example 2
Solve
x = –1
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6. 3.6: Solve using Ratios and Proportions
Example 3
Solve
x = 18
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7. 3.6: Solve using Ratios and Proportions
Your Turn
Solve
x = 30
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8. 3.6: Solve using Ratios and Proportions
Problem Solving Steps
Write the proportion by rewriting it this way:
Simplify
Solve and label
Check
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3.6: Solve using Ratios and Proportions

9. 3.6: Solve using Ratios and Proportions
Example 4
Each day, the seals at an aquarium are each fed 8 pounds of food for every 100 pounds of their body weight. A sea at the aquarium weighs 280 pounds. How much food should the seal be fed per day?
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10. 3.6: Solve using Ratios and Proportions
Your Turn
Little Suzy is making her own potting soil. For every 4 buckets of moss, she mixes in 3 buckets of fertilizer. Suppose she uses 10 buckets of moss, how many buckets of fertilizer will she use?
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11. 3.6: Solve using Ratios and Proportions
Assignment
Page even, 34, 39
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