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Finding the Fourth Proportional to 41.37, 61.79 and 38.31

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Solution

The fourth proportional to 41.37, 61.79 and 38.31 is: 57.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.37 : 61.79 = 38.31 : x
  2. Step 2: Convert to fraction form
    41.37/61.79 = 38.31/x
  3. Step 3: Cross multiply
    41.37x = 61.79 × 38.31
  4. Step 4: Simplify right side
    41.37x = 2,367.17
  5. Step 5: Solve for x
    x = 2,367.17/41.37
  6. Step 6: Final answer
    x = 57.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.