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Finding the Fourth Proportional to 42.44, 63.27 and 40.71

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Solution

The fourth proportional to 42.44, 63.27 and 40.71 is: 60.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.44 : 63.27 = 40.71 : x
  2. Step 2: Convert to fraction form
    42.44/63.27 = 40.71/x
  3. Step 3: Cross multiply
    42.44x = 63.27 × 40.71
  4. Step 4: Simplify right side
    42.44x = 2,575.72
  5. Step 5: Solve for x
    x = 2,575.72/42.44
  6. Step 6: Final answer
    x = 60.70

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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.