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Finding the Fourth Proportional to 445.28, 667.94 and 120.65

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Solution

The fourth proportional to 445.28, 667.94 and 120.65 is: 180.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.28 : 667.94 = 120.65 : x
  2. Step 2: Convert to fraction form
    445.28/667.94 = 120.65/x
  3. Step 3: Cross multiply
    445.28x = 667.94 × 120.65
  4. Step 4: Simplify right side
    445.28x = 80,583.02
  5. Step 5: Solve for x
    x = 80,583.02/445.28
  6. Step 6: Final answer
    x = 180.97

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