1. 7.1 and 7.2 Ratios and Proportions

2. Ratio
Comparison of 2 or more things

3. Expressed in 3 ways Quotient using a division sign Fraction
Ratio using a colon ( : )

4. Make sure they are in simplest form!
Always be sure to reduce!

5. To write the ratio of 2 quantities of different units:
Express the measures in the same unit (convert bigger unit to smaller unit)
Write and simplify the ratio

6. Proportion An equation that states two equal ratios
a:b = c:d “a is to b as c is to d”

7. Means and Extremes Extremes: 1st and 4th terms
Ex: a, d
Means: 2nd and 3rd terms
Ex. b, c

8. Means/Extremes Property
Product of the means equals the product of the extremes
Cross-Multiplication Property