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Finding the Fourth Proportional to 232.20, 320.08 and 158.38

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Solution

The fourth proportional to 232.20, 320.08 and 158.38 is: 218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.20 : 320.08 = 158.38 : x
  2. Step 2: Convert to fraction form
    232.20/320.08 = 158.38/x
  3. Step 3: Cross multiply
    232.20x = 320.08 × 158.38
  4. Step 4: Simplify right side
    232.20x = 50,694.27
  5. Step 5: Solve for x
    x = 50,694.27/232.20
  6. Step 6: Final answer
    x = 218.32

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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.