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Finding the Fourth Proportional to 574.92, 861.89 and 262.45

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Solution

The fourth proportional to 574.92, 861.89 and 262.45 is: 393.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.92 : 861.89 = 262.45 : x
  2. Step 2: Convert to fraction form
    574.92/861.89 = 262.45/x
  3. Step 3: Cross multiply
    574.92x = 861.89 × 262.45
  4. Step 4: Simplify right side
    574.92x = 226,201.72
  5. Step 5: Solve for x
    x = 226,201.72/574.92
  6. Step 6: Final answer
    x = 393.45

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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.