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Finding the Fourth Proportional to 418.25, 627.65 and 161.75

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Solution

The fourth proportional to 418.25, 627.65 and 161.75 is: 242.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.25 : 627.65 = 161.75 : x
  2. Step 2: Convert to fraction form
    418.25/627.65 = 161.75/x
  3. Step 3: Cross multiply
    418.25x = 627.65 × 161.75
  4. Step 4: Simplify right side
    418.25x = 101,521.58
  5. Step 5: Solve for x
    x = 101,521.58/418.25
  6. Step 6: Final answer
    x = 242.73

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