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Finding the Fourth Proportional to 552.16, 761.61 and 330.97

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Solution

The fourth proportional to 552.16, 761.61 and 330.97 is: 456.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.16 : 761.61 = 330.97 : x
  2. Step 2: Convert to fraction form
    552.16/761.61 = 330.97/x
  3. Step 3: Cross multiply
    552.16x = 761.61 × 330.97
  4. Step 4: Simplify right side
    552.16x = 252,070.06
  5. Step 5: Solve for x
    x = 252,070.06/552.16
  6. Step 6: Final answer
    x = 456.52

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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.