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Math Help - Geometric Sequence

  1. #1
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    Geometric Sequence

    Find x so that x - 1, x, and x + 2 are consecutive terms of a geometric sequence.

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  2. #2
    A riddle wrapped in an enigma
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    Quote Originally Posted by magentarita View Post
    Find x so that x - 1, x, and x + 2 are consecutive terms of a geometric sequence.
    In a geometric sequence, there must be a 'common ratio' between consecutive terms. So...

    \frac{x}{x-1}=\frac{x+2}{x}

    Solve for x.
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  3. #3
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    again....

    Quote Originally Posted by masters View Post
    In a geometric sequence, there must be a 'common ratio' between consecutive terms. So...

    \frac{x}{x-1}=\frac{x+2}{x}

    Solve for x.
    I had no idea that there must be a common ratio in terms of geometric sequence.
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