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Finding the Fourth Proportional to 2,254.38, 3,381.44 and 715.38

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Solution

The fourth proportional to 2,254.38, 3,381.44 and 715.38 is: 1,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,254.38 : 3,381.44 = 715.38 : x
  2. Step 2: Convert to fraction form
    2,254.38/3,381.44 = 715.38/x
  3. Step 3: Cross multiply
    2,254.38x = 3,381.44 × 715.38
  4. Step 4: Simplify right side
    2,254.38x = 2,419,010.97
  5. Step 5: Solve for x
    x = 2,419,010.97/2,254.38
  6. Step 6: Final answer
    x = 1,073.03

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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.