Having the same or constant ratio.

Having the same or constant ratio.

• A. Constant
• B. Similar
• C. Proportional
• D. Equivalent

Answer: (C)

Having the same or constant ratio describes a proportional relationship. When two quantities change together and their ratio stays the same, one is a constant multiple of the other, so they are proportional. For example, if y = 3x, the ratio y/x is always 3 no matter what x is. The other terms describe different ideas: a constant is a fixed value by itself, similar refers to shapes with matching angles and proportional sides, and equivalent means equal in value. So the idea of a fixed ratio between two quantities is exactly what “proportional” means.

Having the same or constant ratio describes a proportional relationship. When two quantities change together and their ratio stays the same, one is a constant multiple of the other, so they are proportional. For example, if y = 3x, the ratio y/x is always 3 no matter what x is. The other terms describe different ideas: a constant is a fixed value by itself, similar refers to shapes with matching angles and proportional sides, and equivalent means equal in value. So the idea of a fixed ratio between two quantities is exactly what “proportional” means.