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Finding the Fourth Proportional to 552.88, 762.78 and 331.66

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Solution

The fourth proportional to 552.88, 762.78 and 331.66 is: 457.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.88 : 762.78 = 331.66 : x
  2. Step 2: Convert to fraction form
    552.88/762.78 = 331.66/x
  3. Step 3: Cross multiply
    552.88x = 762.78 × 331.66
  4. Step 4: Simplify right side
    552.88x = 252,983.61
  5. Step 5: Solve for x
    x = 252,983.61/552.88
  6. Step 6: Final answer
    x = 457.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.