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Finding the Fourth Proportional to 574.19, 861.55 and 410.71

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Solution

The fourth proportional to 574.19, 861.55 and 410.71 is: 616.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.19 : 861.55 = 410.71 : x
  2. Step 2: Convert to fraction form
    574.19/861.55 = 410.71/x
  3. Step 3: Cross multiply
    574.19x = 861.55 × 410.71
  4. Step 4: Simplify right side
    574.19x = 353,845.15
  5. Step 5: Solve for x
    x = 353,845.15/574.19
  6. Step 6: Final answer
    x = 616.26

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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.