Finding the Fourth Proportional to 84.73, 116.99 and 66.28
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Solution
The fourth proportional to 84.73, 116.99 and 66.28 is: 91.52
Step by Step Solution
- Step 1: Write the proportion equation
84.73 : 116.99 = 66.28 : x - Step 2: Convert to fraction form
84.73/116.99 = 66.28/x - Step 3: Cross multiply
84.73x = 116.99 × 66.28 - Step 4: Simplify right side
84.73x = 7,754.10 - Step 5: Solve for x
x = 7,754.10/84.73 - Step 6: Final answer
x = 91.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.