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Finding the Fourth Proportional to 276.27, 414.41 and 139.29

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Solution

The fourth proportional to 276.27, 414.41 and 139.29 is: 208.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.27 : 414.41 = 139.29 : x
  2. Step 2: Convert to fraction form
    276.27/414.41 = 139.29/x
  3. Step 3: Cross multiply
    276.27x = 414.41 × 139.29
  4. Step 4: Simplify right side
    276.27x = 57,722.47
  5. Step 5: Solve for x
    x = 57,722.47/276.27
  6. Step 6: Final answer
    x = 208.94

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