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Finding the Fourth Proportional to 323.55, 446.22 and 218.61

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Solution

The fourth proportional to 323.55, 446.22 and 218.61 is: 301.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.55 : 446.22 = 218.61 : x
  2. Step 2: Convert to fraction form
    323.55/446.22 = 218.61/x
  3. Step 3: Cross multiply
    323.55x = 446.22 × 218.61
  4. Step 4: Simplify right side
    323.55x = 97,548.70
  5. Step 5: Solve for x
    x = 97,548.70/323.55
  6. Step 6: Final answer
    x = 301.49

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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.