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Finding the Fourth Proportional to 327.39, 451.38 and 248.79

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Solution

The fourth proportional to 327.39, 451.38 and 248.79 is: 343.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.39 : 451.38 = 248.79 : x
  2. Step 2: Convert to fraction form
    327.39/451.38 = 248.79/x
  3. Step 3: Cross multiply
    327.39x = 451.38 × 248.79
  4. Step 4: Simplify right side
    327.39x = 112,298.83
  5. Step 5: Solve for x
    x = 112,298.83/327.39
  6. Step 6: Final answer
    x = 343.01

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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.