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Finding the Fourth Proportional to 44.01, 60.78 and 39.91

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Solution

The fourth proportional to 44.01, 60.78 and 39.91 is: 55.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.01 : 60.78 = 39.91 : x
  2. Step 2: Convert to fraction form
    44.01/60.78 = 39.91/x
  3. Step 3: Cross multiply
    44.01x = 60.78 × 39.91
  4. Step 4: Simplify right side
    44.01x = 2,425.73
  5. Step 5: Solve for x
    x = 2,425.73/44.01
  6. Step 6: Final answer
    x = 55.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.