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Finding the Fourth Proportional to 232.40, 346.42 and 225.20

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Solution

The fourth proportional to 232.40, 346.42 and 225.20 is: 335.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.40 : 346.42 = 225.20 : x
  2. Step 2: Convert to fraction form
    232.40/346.42 = 225.20/x
  3. Step 3: Cross multiply
    232.40x = 346.42 × 225.20
  4. Step 4: Simplify right side
    232.40x = 78,013.78
  5. Step 5: Solve for x
    x = 78,013.78/232.40
  6. Step 6: Final answer
    x = 335.69

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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.