Chapter 4: Percents and Problem Solving

Section 4.1: Ratio and Proportion
Essential Ideas

  • A ratio is the quotient of two numbers, and a proportion is a statement of equality between ratios.

  • Property of Proportions
    If the product of the means equals the product of the extremes, then the ratios form a proportion. If the ratios form a proportion, then the product of the means equals the product of the extremes.