SOLUTION: If 5/3 and 20 are the first and last terms respectively,of a geometric sequence,determine the value(s) of the fifth term if there are seven terms in the sequence

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Question 844511: If 5/3 and 20 are the first and last terms respectively,of a geometric sequence,determine the value(s) of the fifth term if there are seven terms in the sequence
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
Tn = t * r^(n - 1)
20 = 5/3 * r^6
r = 1.5131
T5 = 5/3 * 1.5131^(4)
T5 = 8.73613