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Finding the Fourth Proportional to 250.38, 343.92 and 203.55

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Solution

The fourth proportional to 250.38, 343.92 and 203.55 is: 279.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.38 : 343.92 = 203.55 : x
  2. Step 2: Convert to fraction form
    250.38/343.92 = 203.55/x
  3. Step 3: Cross multiply
    250.38x = 343.92 × 203.55
  4. Step 4: Simplify right side
    250.38x = 70,004.92
  5. Step 5: Solve for x
    x = 70,004.92/250.38
  6. Step 6: Final answer
    x = 279.59

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.