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Finding the Fourth Proportional to 343.43, 473.85 and 203.55

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Solution

The fourth proportional to 343.43, 473.85 and 203.55 is: 280.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.43 : 473.85 = 203.55 : x
  2. Step 2: Convert to fraction form
    343.43/473.85 = 203.55/x
  3. Step 3: Cross multiply
    343.43x = 473.85 × 203.55
  4. Step 4: Simplify right side
    343.43x = 96,452.17
  5. Step 5: Solve for x
    x = 96,452.17/343.43
  6. Step 6: Final answer
    x = 280.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.