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Finding the Fourth Proportional to 1,614.60, 2,422.06 and 519

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Solution

The fourth proportional to 1,614.60, 2,422.06 and 519 is: 778.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,614.60 : 2,422.06 = 519 : x
  2. Step 2: Convert to fraction form
    1,614.60/2,422.06 = 519/x
  3. Step 3: Cross multiply
    1,614.60x = 2,422.06 × 519
  4. Step 4: Simplify right side
    1,614.60x = 1,257,049.14
  5. Step 5: Solve for x
    x = 1,257,049.14/1,614.60
  6. Step 6: Final answer
    x = 778.55

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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.