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Finding the Fourth Proportional to 551.31, 826.28 and 242.85

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Solution

The fourth proportional to 551.31, 826.28 and 242.85 is: 363.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.31 : 826.28 = 242.85 : x
  2. Step 2: Convert to fraction form
    551.31/826.28 = 242.85/x
  3. Step 3: Cross multiply
    551.31x = 826.28 × 242.85
  4. Step 4: Simplify right side
    551.31x = 200,659.56
  5. Step 5: Solve for x
    x = 200,659.56/551.31
  6. Step 6: Final answer
    x = 363.97

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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.