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Finding the Fourth Proportional to 408.03, 612.04 and 134.12

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Solution

The fourth proportional to 408.03, 612.04 and 134.12 is: 201.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.03 : 612.04 = 134.12 : x
  2. Step 2: Convert to fraction form
    408.03/612.04 = 134.12/x
  3. Step 3: Cross multiply
    408.03x = 612.04 × 134.12
  4. Step 4: Simplify right side
    408.03x = 82,086.80
  5. Step 5: Solve for x
    x = 82,086.80/408.03
  6. Step 6: Final answer
    x = 201.18

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