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Finding the Fourth Proportional to 551.02, 826.53 and 397.92

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Solution

The fourth proportional to 551.02, 826.53 and 397.92 is: 596.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.02 : 826.53 = 397.92 : x
  2. Step 2: Convert to fraction form
    551.02/826.53 = 397.92/x
  3. Step 3: Cross multiply
    551.02x = 826.53 × 397.92
  4. Step 4: Simplify right side
    551.02x = 328,892.82
  5. Step 5: Solve for x
    x = 328,892.82/551.02
  6. Step 6: Final answer
    x = 596.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.