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Finding the Fourth Proportional to 327.76, 491.64 and 135.24

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Solution

The fourth proportional to 327.76, 491.64 and 135.24 is: 202.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.76 : 491.64 = 135.24 : x
  2. Step 2: Convert to fraction form
    327.76/491.64 = 135.24/x
  3. Step 3: Cross multiply
    327.76x = 491.64 × 135.24
  4. Step 4: Simplify right side
    327.76x = 66,489.39
  5. Step 5: Solve for x
    x = 66,489.39/327.76
  6. Step 6: Final answer
    x = 202.86

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