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Finding the Fourth Proportional to 574.63, 861.91 and 179.30

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Solution

The fourth proportional to 574.63, 861.91 and 179.30 is: 268.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.63 : 861.91 = 179.30 : x
  2. Step 2: Convert to fraction form
    574.63/861.91 = 179.30/x
  3. Step 3: Cross multiply
    574.63x = 861.91 × 179.30
  4. Step 4: Simplify right side
    574.63x = 154,540.46
  5. Step 5: Solve for x
    x = 154,540.46/574.63
  6. Step 6: Final answer
    x = 268.94

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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.