The sequence provided is \(27, 9, 3, 1\).

To find the geometric ratio (common ratio) of a geometric sequence, you divide any term by the previous term. 

Let's calculate the ratio:

\[
\text{Common Ratio} = \frac{\text{Second term}}{\text{First term}} = \frac{9}{27} = \frac{1}{3}
\]

Let's verify that this ratio holds for the other terms:

\[
\frac{\text{Third term}}{\text{Second term}} = \frac{3}{9} = \frac{1}{3}
\]

\[
\frac{\text{Fourth term}}{\text{Third term}} = \frac{1}{3} = \frac{

Understand how to calculate the geometric ratio of the sequence 27, 9, 3, 1. This problem involves identifying the common ratio in a geometric sequence, demonstrating mathematical reasoning suitable for Grades 7-9.

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