What are some examples of math ratio problems?

Example questions of math ratio problems include: On a map, if 1 inch represents 10 miles, how many miles does 3 inches represent? If a classroom contains 10 girls and 15 boys, what is the ratio of girls to students in the class?

Another sample math ratio problem is: If an athlete makes seven out of every 10 shots, how many shots does she make if she takes 80 shots?

Proportions are made up of ratios, and math problems involving scaling of maps, conversion of units, similar shapes, and probabilities are solved with proportions. A ratio represents the relationship between two values, and a proportion is an equation of ratios.