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Finding the Fourth Proportional to 615.09, 922.98 and 249.80

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Solution

The fourth proportional to 615.09, 922.98 and 249.80 is: 374.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.09 : 922.98 = 249.80 : x
  2. Step 2: Convert to fraction form
    615.09/922.98 = 249.80/x
  3. Step 3: Cross multiply
    615.09x = 922.98 × 249.80
  4. Step 4: Simplify right side
    615.09x = 230,557.67
  5. Step 5: Solve for x
    x = 230,557.67/615.09
  6. Step 6: Final answer
    x = 374.83

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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.