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Finding the Fourth Proportional to 406.60, 560.82 and 249.24

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Solution

The fourth proportional to 406.60, 560.82 and 249.24 is: 343.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.60 : 560.82 = 249.24 : x
  2. Step 2: Convert to fraction form
    406.60/560.82 = 249.24/x
  3. Step 3: Cross multiply
    406.60x = 560.82 × 249.24
  4. Step 4: Simplify right side
    406.60x = 139,778.78
  5. Step 5: Solve for x
    x = 139,778.78/406.60
  6. Step 6: Final answer
    x = 343.77

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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.