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Finding the Fourth Proportional to 552.17, 761.71 and 330.97

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Solution

The fourth proportional to 552.17, 761.71 and 330.97 is: 456.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.17 : 761.71 = 330.97 : x
  2. Step 2: Convert to fraction form
    552.17/761.71 = 330.97/x
  3. Step 3: Cross multiply
    552.17x = 761.71 × 330.97
  4. Step 4: Simplify right side
    552.17x = 252,103.16
  5. Step 5: Solve for x
    x = 252,103.16/552.17
  6. Step 6: Final answer
    x = 456.57

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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.