Evaluate
\frac{\sqrt{7}}{4}\approx 0.661437828
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\frac{7\sqrt{7}}{4\left(\sqrt{7}\right)^{2}}
Rationalize the denominator of \frac{7}{4\sqrt{7}} by multiplying numerator and denominator by \sqrt{7}.
\frac{7\sqrt{7}}{4\times 7}
The square of \sqrt{7} is 7.
\frac{\sqrt{7}}{4}
Cancel out 7 in both numerator and denominator.
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