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Finding the Fourth Proportional to 614.62, 921.62 and 249.30

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Solution

The fourth proportional to 614.62, 921.62 and 249.30 is: 373.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.62 : 921.62 = 249.30 : x
  2. Step 2: Convert to fraction form
    614.62/921.62 = 249.30/x
  3. Step 3: Cross multiply
    614.62x = 921.62 × 249.30
  4. Step 4: Simplify right side
    614.62x = 229,759.87
  5. Step 5: Solve for x
    x = 229,759.87/614.62
  6. Step 6: Final answer
    x = 373.82

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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.