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Finding the Fourth Proportional to 458.98, 633.39 and 249.15

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Solution

The fourth proportional to 458.98, 633.39 and 249.15 is: 343.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.98 : 633.39 = 249.15 : x
  2. Step 2: Convert to fraction form
    458.98/633.39 = 249.15/x
  3. Step 3: Cross multiply
    458.98x = 633.39 × 249.15
  4. Step 4: Simplify right side
    458.98x = 157,806.57
  5. Step 5: Solve for x
    x = 157,806.57/458.98
  6. Step 6: Final answer
    x = 343.82

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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.