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Finding the Fourth Proportional to 552.76, 763.32 and 356.61

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Solution

The fourth proportional to 552.76, 763.32 and 356.61 is: 492.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.76 : 763.32 = 356.61 : x
  2. Step 2: Convert to fraction form
    552.76/763.32 = 356.61/x
  3. Step 3: Cross multiply
    552.76x = 763.32 × 356.61
  4. Step 4: Simplify right side
    552.76x = 272,207.55
  5. Step 5: Solve for x
    x = 272,207.55/552.76
  6. Step 6: Final answer
    x = 492.45

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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.