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Finding the Fourth Proportional to 447.11, 669.65 and 324.11

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Solution

The fourth proportional to 447.11, 669.65 and 324.11 is: 485.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.11 : 669.65 = 324.11 : x
  2. Step 2: Convert to fraction form
    447.11/669.65 = 324.11/x
  3. Step 3: Cross multiply
    447.11x = 669.65 × 324.11
  4. Step 4: Simplify right side
    447.11x = 217,038.64
  5. Step 5: Solve for x
    x = 217,038.64/447.11
  6. Step 6: Final answer
    x = 485.43

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