Finding the Fourth Proportional to 58.28, 87.36 and 31.19
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Solution
The fourth proportional to 58.28, 87.36 and 31.19 is: 46.75
Step by Step Solution
- Step 1: Write the proportion equation
58.28 : 87.36 = 31.19 : x - Step 2: Convert to fraction form
58.28/87.36 = 31.19/x - Step 3: Cross multiply
58.28x = 87.36 × 31.19 - Step 4: Simplify right side
58.28x = 2,724.76 - Step 5: Solve for x
x = 2,724.76/58.28 - Step 6: Final answer
x = 46.75
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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.