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Finding the Fourth Proportional to 249.20, 344.23 and 191.70

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Solution

The fourth proportional to 249.20, 344.23 and 191.70 is: 264.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.20 : 344.23 = 191.70 : x
  2. Step 2: Convert to fraction form
    249.20/344.23 = 191.70/x
  3. Step 3: Cross multiply
    249.20x = 344.23 × 191.70
  4. Step 4: Simplify right side
    249.20x = 65,988.89
  5. Step 5: Solve for x
    x = 65,988.89/249.20
  6. Step 6: Final answer
    x = 264.80

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