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Finding the Fourth Proportional to 574.32, 861.84 and 355.26

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Solution

The fourth proportional to 574.32, 861.84 and 355.26 is: 533.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.32 : 861.84 = 355.26 : x
  2. Step 2: Convert to fraction form
    574.32/861.84 = 355.26/x
  3. Step 3: Cross multiply
    574.32x = 861.84 × 355.26
  4. Step 4: Simplify right side
    574.32x = 306,177.28
  5. Step 5: Solve for x
    x = 306,177.28/574.32
  6. Step 6: Final answer
    x = 533.11

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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.