Lesson 3: Ratio and Proportion Flashcards
1
Q
A comparison of two quantities expressed in colon form or as a fraction.
A
Ratio
2
Q
The equality of two ratios.
A
Proportion
3
Q
This is a type of proportion wherein as one quantity increases or decreases, the other quantity also increases or decreases, respectively.
A
Direct Proportion
4
Q
This is a type of proportion wherein as one quantity increases or decreases, the other quantity decreases or increases, respectively.
A
Inverse Proportion
5
Q
This is a proportion formed when a whole is divided into parts of certain ratio.
A
Partitive Proportion
6
Q
If a/b = c/d, then ad = bc.
A
Cross Product Property
7
Q
Id a:b = c:d, then ad:bc. We call a and d the extremes and b and c the means. That is, the product of the means is equal to the product of the extremes.
A
Means-Extremes Property
