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Finding the Fourth Proportional to 330.25, 495.34 and 193.21

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Solution

The fourth proportional to 330.25, 495.34 and 193.21 is: 289.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.25 : 495.34 = 193.21 : x
  2. Step 2: Convert to fraction form
    330.25/495.34 = 193.21/x
  3. Step 3: Cross multiply
    330.25x = 495.34 × 193.21
  4. Step 4: Simplify right side
    330.25x = 95,704.64
  5. Step 5: Solve for x
    x = 95,704.64/330.25
  6. Step 6: Final answer
    x = 289.79

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