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Finding the Fourth Proportional to 323.82, 485.85 and 118.53

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Solution

The fourth proportional to 323.82, 485.85 and 118.53 is: 177.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.82 : 485.85 = 118.53 : x
  2. Step 2: Convert to fraction form
    323.82/485.85 = 118.53/x
  3. Step 3: Cross multiply
    323.82x = 485.85 × 118.53
  4. Step 4: Simplify right side
    323.82x = 57,585.53
  5. Step 5: Solve for x
    x = 57,585.53/323.82
  6. Step 6: Final answer
    x = 177.83

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