Missing Sides in Similar Shapes (Basic):

Proportional Word Problems:

Solve a Proportion:

Write a Proportion:

More Ratios and Rates Practice:

https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic

More Proportional Relationships Practice:

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion