Thursday

August 28, 2014

August 28, 2014

Posted by **Mona** on Thursday, January 31, 2013 at 6:48pm.

- Geometry-8th gr -
**Reiny**, Thursday, January 31, 2013 at 7:16pm16/x = x/9 , cross-multiply

x^2= 144

x = √144 = 12

check:

16/12 = 4/3

12/9 = 4/3

- Geometry-8th gr -
**Mona**, Thursday, January 31, 2013 at 7:20pmThanks. So the geometric mean for 16 and 9 is 4/3?

- Geometry-8th gr -
**Reiny**, Thursday, January 31, 2013 at 7:44pmNOOO, the geometric mean is 12

I merely showed that 12 is correct

and satisfied your given proportion

a/x = x/b

the 3 numbers are:

16 , 12 , 9 , with 12 as the geometric mean

- Geometry-8th gr -
**Mona**, Friday, February 1, 2013 at 11:48amOh okay...thanks.

**Related Questions**

geometric mean - The geometric mean of two postitive numbers a and b is sqrt(ab...

Math *URGENT - Please give the answers and solutions for each. 1.If the second ...

arithmetic - 1. The first and last term of an A.P are, a and l respectively, ...

arithmetic - 1. The first and last term of an A.P are, a and l respectively, ...

math - if the arithmetic mean of 2 positive numbers (a and b) is 16 and their ...

math - What is the difference between geometric mean and arithmetic mean? ...

arithmetic - use the geometric mean to find the 7th term in a geometric sequence...

geometry/help - Is it possible for the geometric mean and the arithmetic meam ...

geometry - Is it possible for the geometric mean and the arithmetic meam of two...

Maths - Geometric Progression - Find the value of x for which the numbers x+1, x...