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Finding the Fourth Proportional to 553.73, 763.91 and 332.55

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Solution

The fourth proportional to 553.73, 763.91 and 332.55 is: 458.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.73 : 763.91 = 332.55 : x
  2. Step 2: Convert to fraction form
    553.73/763.91 = 332.55/x
  3. Step 3: Cross multiply
    553.73x = 763.91 × 332.55
  4. Step 4: Simplify right side
    553.73x = 254,041.44
  5. Step 5: Solve for x
    x = 254,041.44/553.73
  6. Step 6: Final answer
    x = 458.78

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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.