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Finding the Fourth Proportional to 323.29, 446.41 and 218.60

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Solution

The fourth proportional to 323.29, 446.41 and 218.60 is: 301.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.29 : 446.41 = 218.60 : x
  2. Step 2: Convert to fraction form
    323.29/446.41 = 218.60/x
  3. Step 3: Cross multiply
    323.29x = 446.41 × 218.60
  4. Step 4: Simplify right side
    323.29x = 97,585.23
  5. Step 5: Solve for x
    x = 97,585.23/323.29
  6. Step 6: Final answer
    x = 301.85

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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.