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Finding the Fourth Proportional to 615.29, 922.89 and 268.43

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Solution

The fourth proportional to 615.29, 922.89 and 268.43 is: 402.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.29 : 922.89 = 268.43 : x
  2. Step 2: Convert to fraction form
    615.29/922.89 = 268.43/x
  3. Step 3: Cross multiply
    615.29x = 922.89 × 268.43
  4. Step 4: Simplify right side
    615.29x = 247,731.36
  5. Step 5: Solve for x
    x = 247,731.36/615.29
  6. Step 6: Final answer
    x = 402.63

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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.