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Finding the Fourth Proportional to 512.91, 769.06 and 187.90

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Solution

The fourth proportional to 512.91, 769.06 and 187.90 is: 281.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.91 : 769.06 = 187.90 : x
  2. Step 2: Convert to fraction form
    512.91/769.06 = 187.90/x
  3. Step 3: Cross multiply
    512.91x = 769.06 × 187.90
  4. Step 4: Simplify right side
    512.91x = 144,501.59
  5. Step 5: Solve for x
    x = 144,501.59/512.91
  6. Step 6: Final answer
    x = 281.73

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