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Finding the Fourth Proportional to 343.28, 514.96 and 112.09

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Solution

The fourth proportional to 343.28, 514.96 and 112.09 is: 168.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.28 : 514.96 = 112.09 : x
  2. Step 2: Convert to fraction form
    343.28/514.96 = 112.09/x
  3. Step 3: Cross multiply
    343.28x = 514.96 × 112.09
  4. Step 4: Simplify right side
    343.28x = 57,720.30
  5. Step 5: Solve for x
    x = 57,720.30/343.28
  6. Step 6: Final answer
    x = 168.15

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