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Finding the Fourth Proportional to 323.43, 446.20 and 198.99

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Solution

The fourth proportional to 323.43, 446.20 and 198.99 is: 274.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.43 : 446.20 = 198.99 : x
  2. Step 2: Convert to fraction form
    323.43/446.20 = 198.99/x
  3. Step 3: Cross multiply
    323.43x = 446.20 × 198.99
  4. Step 4: Simplify right side
    323.43x = 88,789.34
  5. Step 5: Solve for x
    x = 88,789.34/323.43
  6. Step 6: Final answer
    x = 274.52

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