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Finding the Fourth Proportional to 327.64, 451.95 and 203.43

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Solution

The fourth proportional to 327.64, 451.95 and 203.43 is: 280.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.64 : 451.95 = 203.43 : x
  2. Step 2: Convert to fraction form
    327.64/451.95 = 203.43/x
  3. Step 3: Cross multiply
    327.64x = 451.95 × 203.43
  4. Step 4: Simplify right side
    327.64x = 91,940.19
  5. Step 5: Solve for x
    x = 91,940.19/327.64
  6. Step 6: Final answer
    x = 280.61

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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.