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Finding the Fourth Proportional to 1,479.42, 2,217.92 and 614.34

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Solution

The fourth proportional to 1,479.42, 2,217.92 and 614.34 is: 921.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.42 : 2,217.92 = 614.34 : x
  2. Step 2: Convert to fraction form
    1,479.42/2,217.92 = 614.34/x
  3. Step 3: Cross multiply
    1,479.42x = 2,217.92 × 614.34
  4. Step 4: Simplify right side
    1,479.42x = 1,362,553.90
  5. Step 5: Solve for x
    x = 1,362,553.90/1,479.42
  6. Step 6: Final answer
    x = 921.01

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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.