Section 8.1 Ratio and Proportion

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Presentation transcript:

Section 8.1 Ratio and Proportion Chapter 8 Similarity Section 8.1 Ratio and Proportion

All Fractions are ratios

Example 3(15) = 5(9) Example

4 qts in gal 1000 mg in a g 16 oz in a 1 lb 3 ft in a 1 yd

12 in. in a ft 24 hours in a day 100 cm in a m 1760 yds in a mi

To Solve a Proportion Cross Multiply

To Solve a Proportion Cross Multiply

Your ratio of inches to total length in feet Write a Proportion Your ratio of inches to total length in feet The given ratio 16x = 560 x = 35 Your model is 35 inches long

Your ratio of inches to total length in feet Write a Proportion Your ratio of inches to total length in feet The given ratio x = 80 The actual sub is 80 feet tall