SOLUTION: The first three terms of a geometric progression are 100, 90 and 81. Find the common ratio of this progression.?

Question 1029021: The first three terms of a geometric progression are 100, 90 and 81.
Find the common ratio of this progression.?
Found 2 solutions by Boreal, stanbon:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
The common ratio: 90/100=0.9
Try it for the next one: 81/90=0.9
The common ratio is 0.9. The next term will be 72.9

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
first three terms of a geometric progression are 100, 90 and 81.
Find the common ratio of this progression.
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r = 90/100 = 0.9
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Cheers,
Stan H.
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