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Finding the Fourth Proportional to 2,257.61, 3,386.42 and 614.18

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Solution

The fourth proportional to 2,257.61, 3,386.42 and 614.18 is: 921.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.61 : 3,386.42 = 614.18 : x
  2. Step 2: Convert to fraction form
    2,257.61/3,386.42 = 614.18/x
  3. Step 3: Cross multiply
    2,257.61x = 3,386.42 × 614.18
  4. Step 4: Simplify right side
    2,257.61x = 2,079,856.04
  5. Step 5: Solve for x
    x = 2,079,856.04/2,257.61
  6. Step 6: Final answer
    x = 921.26

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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.