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Finding the Fourth Proportional to 383.11, 574.21 and 220.46

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Solution

The fourth proportional to 383.11, 574.21 and 220.46 is: 330.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.11 : 574.21 = 220.46 : x
  2. Step 2: Convert to fraction form
    383.11/574.21 = 220.46/x
  3. Step 3: Cross multiply
    383.11x = 574.21 × 220.46
  4. Step 4: Simplify right side
    383.11x = 126,589.89
  5. Step 5: Solve for x
    x = 126,589.89/383.11
  6. Step 6: Final answer
    x = 330.43

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