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Finding the Fourth Proportional to 41.28, 62.24 and 39.15

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Solution

The fourth proportional to 41.28, 62.24 and 39.15 is: 59.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.28 : 62.24 = 39.15 : x
  2. Step 2: Convert to fraction form
    41.28/62.24 = 39.15/x
  3. Step 3: Cross multiply
    41.28x = 62.24 × 39.15
  4. Step 4: Simplify right side
    41.28x = 2,436.50
  5. Step 5: Solve for x
    x = 2,436.50/41.28
  6. Step 6: Final answer
    x = 59.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.