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Finding the Fourth Proportional to 41.38, 56.77 and 39.29

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Solution

The fourth proportional to 41.38, 56.77 and 39.29 is: 53.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.38 : 56.77 = 39.29 : x
  2. Step 2: Convert to fraction form
    41.38/56.77 = 39.29/x
  3. Step 3: Cross multiply
    41.38x = 56.77 × 39.29
  4. Step 4: Simplify right side
    41.38x = 2,230.11
  5. Step 5: Solve for x
    x = 2,230.11/41.38
  6. Step 6: Final answer
    x = 53.90

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.