Ratios & Proportion

Ratio & Proportion

Warm Up

Determining Proportionality

When two ratios are equivalent (have the same value) they are said to be proportional. We can test proportionality by comparing the CROSS PRODUCTS

Determine Whether the Following Ratios are Proportional

Try using the cross product (butterfly) method.

Multiple Choice

• $=$

• $\ne$

Multiple Choice

• Equivalent

• Not Equivalent

Multiple Choice

Are these two ratios proportional?

• Proportional

• Not Proportional

Multiple Choice

Determine the proportionality.

• $=$

• $\ne$