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Finding the Fourth Proportional to 232.02, 320.08 and 138.71

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Solution

The fourth proportional to 232.02, 320.08 and 138.71 is: 191.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.02 : 320.08 = 138.71 : x
  2. Step 2: Convert to fraction form
    232.02/320.08 = 138.71/x
  3. Step 3: Cross multiply
    232.02x = 320.08 × 138.71
  4. Step 4: Simplify right side
    232.02x = 44,398.30
  5. Step 5: Solve for x
    x = 44,398.30/232.02
  6. Step 6: Final answer
    x = 191.36

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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.