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Finding the Fourth Proportional to 327.11, 451.46 and 274.60

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Solution

The fourth proportional to 327.11, 451.46 and 274.60 is: 378.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.11 : 451.46 = 274.60 : x
  2. Step 2: Convert to fraction form
    327.11/451.46 = 274.60/x
  3. Step 3: Cross multiply
    327.11x = 451.46 × 274.60
  4. Step 4: Simplify right side
    327.11x = 123,967.29
  5. Step 5: Solve for x
    x = 123,967.29/327.11
  6. Step 6: Final answer
    x = 378.98

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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.