Finding the Fourth Proportional to 91.24, 136.86 and 37.12
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Solution
The fourth proportional to 91.24, 136.86 and 37.12 is: 55.68
Step by Step Solution
- Step 1: Write the proportion equation
91.24 : 136.86 = 37.12 : x - Step 2: Convert to fraction form
91.24/136.86 = 37.12/x - Step 3: Cross multiply
91.24x = 136.86 × 37.12 - Step 4: Simplify right side
91.24x = 5,080.24 - Step 5: Solve for x
x = 5,080.24/91.24 - Step 6: Final answer
x = 55.68
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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.