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Finding the Fourth Proportional to 552.16, 761.92 and 331.10

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Solution

The fourth proportional to 552.16, 761.92 and 331.10 is: 456.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.16 : 761.92 = 331.10 : x
  2. Step 2: Convert to fraction form
    552.16/761.92 = 331.10/x
  3. Step 3: Cross multiply
    552.16x = 761.92 × 331.10
  4. Step 4: Simplify right side
    552.16x = 252,271.71
  5. Step 5: Solve for x
    x = 252,271.71/552.16
  6. Step 6: Final answer
    x = 456.89

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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.