Finding the Fourth Proportional to 91.24, 136.86 and 59.08
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Solution
The fourth proportional to 91.24, 136.86 and 59.08 is: 88.62
Step by Step Solution
- Step 1: Write the proportion equation
91.24 : 136.86 = 59.08 : x - Step 2: Convert to fraction form
91.24/136.86 = 59.08/x - Step 3: Cross multiply
91.24x = 136.86 × 59.08 - Step 4: Simplify right side
91.24x = 8,085.69 - Step 5: Solve for x
x = 8,085.69/91.24 - Step 6: Final answer
x = 88.62
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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.