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Finding the Fourth Proportional to 621.53, 932.38 and 231.48

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Solution

The fourth proportional to 621.53, 932.38 and 231.48 is: 347.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.53 : 932.38 = 231.48 : x
  2. Step 2: Convert to fraction form
    621.53/932.38 = 231.48/x
  3. Step 3: Cross multiply
    621.53x = 932.38 × 231.48
  4. Step 4: Simplify right side
    621.53x = 215,826.74
  5. Step 5: Solve for x
    x = 215,826.74/621.53
  6. Step 6: Final answer
    x = 347.25

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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.