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Finding the Fourth Proportional to 614.39, 921.24 and 203.31

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Solution

The fourth proportional to 614.39, 921.24 and 203.31 is: 304.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.39 : 921.24 = 203.31 : x
  2. Step 2: Convert to fraction form
    614.39/921.24 = 203.31/x
  3. Step 3: Cross multiply
    614.39x = 921.24 × 203.31
  4. Step 4: Simplify right side
    614.39x = 187,297.30
  5. Step 5: Solve for x
    x = 187,297.30/614.39
  6. Step 6: Final answer
    x = 304.85

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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.