Finding the Fourth Proportional to 102.76, 141.79 and 59.08
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Solution
The fourth proportional to 102.76, 141.79 and 59.08 is: 81.52
Step by Step Solution
- Step 1: Write the proportion equation
102.76 : 141.79 = 59.08 : x - Step 2: Convert to fraction form
102.76/141.79 = 59.08/x - Step 3: Cross multiply
102.76x = 141.79 × 59.08 - Step 4: Simplify right side
102.76x = 8,377.01 - Step 5: Solve for x
x = 8,377.01/102.76 - Step 6: Final answer
x = 81.52
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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.