SOLUTION: Insert three Geometric means between 8 and 648.

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Question 1041245: Insert three Geometric means between 8 and 648.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
I found this on the net:
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" In general, if you want to insert X geometric means between A and B, divide A and B (B/A).
Then find its (X + 1) th root of B/A. That is the common
ratio, then multiply the common ratio by A or
until you have finished inserting all geometric means. "
Following this:
+B%2FA+=+648%2F8+
+B%2FA+=+81+
The +X+%2B+1+th root would be the 4th root, so
+root%28+4%2C81+%29+=+3+
+8%2A3+=+24+
+3%2A24+=+72+
+3%2A72+=+216+
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the 3 geometric means are: 24, 72 and 216
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check answer:
Is +3%2A216+=+648+ ?
yes
OK