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Finding the Fourth Proportional to 574.35, 861.11 and 265.77

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Solution

The fourth proportional to 574.35, 861.11 and 265.77 is: 398.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.35 : 861.11 = 265.77 : x
  2. Step 2: Convert to fraction form
    574.35/861.11 = 265.77/x
  3. Step 3: Cross multiply
    574.35x = 861.11 × 265.77
  4. Step 4: Simplify right side
    574.35x = 228,855.88
  5. Step 5: Solve for x
    x = 228,855.88/574.35
  6. Step 6: Final answer
    x = 398.46

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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.