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Finding the Fourth Proportional to 39.43, 58.92 and 29.75

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Solution

The fourth proportional to 39.43, 58.92 and 29.75 is: 44.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.43 : 58.92 = 29.75 : x
  2. Step 2: Convert to fraction form
    39.43/58.92 = 29.75/x
  3. Step 3: Cross multiply
    39.43x = 58.92 × 29.75
  4. Step 4: Simplify right side
    39.43x = 1,752.58
  5. Step 5: Solve for x
    x = 1,752.58/39.43
  6. Step 6: Final answer
    x = 44.45

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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.