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Finding the Fourth Proportional to 615.43, 922.74 and 249.79

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Solution

The fourth proportional to 615.43, 922.74 and 249.79 is: 374.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.43 : 922.74 = 249.79 : x
  2. Step 2: Convert to fraction form
    615.43/922.74 = 249.79/x
  3. Step 3: Cross multiply
    615.43x = 922.74 × 249.79
  4. Step 4: Simplify right side
    615.43x = 230,491.22
  5. Step 5: Solve for x
    x = 230,491.22/615.43
  6. Step 6: Final answer
    x = 374.52

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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.