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Finding the Fourth Proportional to 552.48, 763.20 and 441.78

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Solution

The fourth proportional to 552.48, 763.20 and 441.78 is: 610.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.48 : 763.20 = 441.78 : x
  2. Step 2: Convert to fraction form
    552.48/763.20 = 441.78/x
  3. Step 3: Cross multiply
    552.48x = 763.20 × 441.78
  4. Step 4: Simplify right side
    552.48x = 337,166.50
  5. Step 5: Solve for x
    x = 337,166.50/552.48
  6. Step 6: Final answer
    x = 610.28

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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.