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Finding the Fourth Proportional to 44.88, 67.34 and 42.71

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Solution

The fourth proportional to 44.88, 67.34 and 42.71 is: 64.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.88 : 67.34 = 42.71 : x
  2. Step 2: Convert to fraction form
    44.88/67.34 = 42.71/x
  3. Step 3: Cross multiply
    44.88x = 67.34 × 42.71
  4. Step 4: Simplify right side
    44.88x = 2,876.31
  5. Step 5: Solve for x
    x = 2,876.31/44.88
  6. Step 6: Final answer
    x = 64.09

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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.