Evaluate
\frac{\sqrt{455}}{455}\approx 0.046880723
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\frac{4\sqrt{455}}{4\left(\sqrt{455}\right)^{2}}
Rationalize the denominator of \frac{4}{4\sqrt{455}} by multiplying numerator and denominator by \sqrt{455}.
\frac{4\sqrt{455}}{4\times 455}
The square of \sqrt{455} is 455.
\frac{\sqrt{455}}{455}
Cancel out 4 in both numerator and denominator.
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