Dictionary
search :       browse : 
A B C D E F G H I J K L M
  N O P Q R S T U V W X Y Z
         
Description
Related Terms
Everyday Examples
Interactive Checkpoint
More Information
Challenge
How to use this dictionary
Contact
 Description  
 Mean Proportional:  The mean proportional of n numbers is the nth root of their product. Also called the geometric mean.

An Illustration of the Geometric Mean:

Suppose the two smaller triangles in this figure are similar. That means that the corresponding sides are proportional. So, we can write:

The number 6 is the geometric mean between 4 and 9 because 6 is the square root of 36, which is the product of 4 and 9.