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Finding the Fourth Proportional to 323.38, 446.34 and 206.74

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Solution

The fourth proportional to 323.38, 446.34 and 206.74 is: 285.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.38 : 446.34 = 206.74 : x
  2. Step 2: Convert to fraction form
    323.38/446.34 = 206.74/x
  3. Step 3: Cross multiply
    323.38x = 446.34 × 206.74
  4. Step 4: Simplify right side
    323.38x = 92,276.33
  5. Step 5: Solve for x
    x = 92,276.33/323.38
  6. Step 6: Final answer
    x = 285.35

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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.