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Finding the Fourth Proportional to 414.86, 572.24 and 274.97

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Solution

The fourth proportional to 414.86, 572.24 and 274.97 is: 379.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.86 : 572.24 = 274.97 : x
  2. Step 2: Convert to fraction form
    414.86/572.24 = 274.97/x
  3. Step 3: Cross multiply
    414.86x = 572.24 × 274.97
  4. Step 4: Simplify right side
    414.86x = 157,344.60
  5. Step 5: Solve for x
    x = 157,344.60/414.86
  6. Step 6: Final answer
    x = 379.28

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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.