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Finding the Fourth Proportional to 39.35, 58.91 and 29.12

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Solution

The fourth proportional to 39.35, 58.91 and 29.12 is: 43.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.35 : 58.91 = 29.12 : x
  2. Step 2: Convert to fraction form
    39.35/58.91 = 29.12/x
  3. Step 3: Cross multiply
    39.35x = 58.91 × 29.12
  4. Step 4: Simplify right side
    39.35x = 1,715.02
  5. Step 5: Solve for x
    x = 1,715.02/39.35
  6. Step 6: Final answer
    x = 43.59

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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.