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Finding the Fourth Proportional to 552.38, 761.98 and 342.48

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Solution

The fourth proportional to 552.38, 761.98 and 342.48 is: 472.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.38 : 761.98 = 342.48 : x
  2. Step 2: Convert to fraction form
    552.38/761.98 = 342.48/x
  3. Step 3: Cross multiply
    552.38x = 761.98 × 342.48
  4. Step 4: Simplify right side
    552.38x = 260,962.05
  5. Step 5: Solve for x
    x = 260,962.05/552.38
  6. Step 6: Final answer
    x = 472.44

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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.