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Finding the Fourth Proportional to 39.43, 58.86 and 37.91

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Solution

The fourth proportional to 39.43, 58.86 and 37.91 is: 56.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.43 : 58.86 = 37.91 : x
  2. Step 2: Convert to fraction form
    39.43/58.86 = 37.91/x
  3. Step 3: Cross multiply
    39.43x = 58.86 × 37.91
  4. Step 4: Simplify right side
    39.43x = 2,231.38
  5. Step 5: Solve for x
    x = 2,231.38/39.43
  6. Step 6: Final answer
    x = 56.59

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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.