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Finding the Fourth Proportional to 327.47, 451.45 and 222.39

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Solution

The fourth proportional to 327.47, 451.45 and 222.39 is: 306.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.47 : 451.45 = 222.39 : x
  2. Step 2: Convert to fraction form
    327.47/451.45 = 222.39/x
  3. Step 3: Cross multiply
    327.47x = 451.45 × 222.39
  4. Step 4: Simplify right side
    327.47x = 100,397.41
  5. Step 5: Solve for x
    x = 100,397.41/327.47
  6. Step 6: Final answer
    x = 306.59

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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.