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Finding the Fourth Proportional to 418.64, 627.52 and 158.40

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Solution

The fourth proportional to 418.64, 627.52 and 158.40 is: 237.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.64 : 627.52 = 158.40 : x
  2. Step 2: Convert to fraction form
    418.64/627.52 = 158.40/x
  3. Step 3: Cross multiply
    418.64x = 627.52 × 158.40
  4. Step 4: Simplify right side
    418.64x = 99,399.17
  5. Step 5: Solve for x
    x = 99,399.17/418.64
  6. Step 6: Final answer
    x = 237.43

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