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Finding the Fourth Proportional to 327.25, 451.20 and 216.48

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Solution

The fourth proportional to 327.25, 451.20 and 216.48 is: 298.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.25 : 451.20 = 216.48 : x
  2. Step 2: Convert to fraction form
    327.25/451.20 = 216.48/x
  3. Step 3: Cross multiply
    327.25x = 451.20 × 216.48
  4. Step 4: Simplify right side
    327.25x = 97,675.78
  5. Step 5: Solve for x
    x = 97,675.78/327.25
  6. Step 6: Final answer
    x = 298.47

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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.