Finding the Fourth Proportional to 86.53, 129.83 and 60.53
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Solution
The fourth proportional to 86.53, 129.83 and 60.53 is: 90.82
Step by Step Solution
- Step 1: Write the proportion equation
86.53 : 129.83 = 60.53 : x - Step 2: Convert to fraction form
86.53/129.83 = 60.53/x - Step 3: Cross multiply
86.53x = 129.83 × 60.53 - Step 4: Simplify right side
86.53x = 7,858.31 - Step 5: Solve for x
x = 7,858.31/86.53 - Step 6: Final answer
x = 90.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.