Finding the Fourth Proportional to 84.97, 117.28 and 55.84
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Solution
The fourth proportional to 84.97, 117.28 and 55.84 is: 77.07
Step by Step Solution
- Step 1: Write the proportion equation
84.97 : 117.28 = 55.84 : x - Step 2: Convert to fraction form
84.97/117.28 = 55.84/x - Step 3: Cross multiply
84.97x = 117.28 × 55.84 - Step 4: Simplify right side
84.97x = 6,548.92 - Step 5: Solve for x
x = 6,548.92/84.97 - Step 6: Final answer
x = 77.07
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.