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Finding the Fourth Proportional to 414.08, 571.61 and 274.43

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Solution

The fourth proportional to 414.08, 571.61 and 274.43 is: 378.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.08 : 571.61 = 274.43 : x
  2. Step 2: Convert to fraction form
    414.08/571.61 = 274.43/x
  3. Step 3: Cross multiply
    414.08x = 571.61 × 274.43
  4. Step 4: Simplify right side
    414.08x = 156,862.70
  5. Step 5: Solve for x
    x = 156,862.70/414.08
  6. Step 6: Final answer
    x = 378.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.