RS Aggarwal Solutions for Class 7 Chapter 8 “Ratio and Proportion” A ratio is a way to compare two quantities by using division as in miles per hour where we compare miles and hours. A proportion, on the other hand, is an equation that says that two ratios are equivalent. If one number in a proportion is unknown, you can find that number by solving the proportion. The Chapter deals with Ratio and Proportion, and its related topics are terms of ratio, comparison of ratios. In our daily life, we use the concept of ratio and proportion, such as in business while dealing with money or while cooking any dish, etc.