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Finding the Fourth Proportional to 251.28, 376.92 and 143.82

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Solution

The fourth proportional to 251.28, 376.92 and 143.82 is: 215.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.28 : 376.92 = 143.82 : x
  2. Step 2: Convert to fraction form
    251.28/376.92 = 143.82/x
  3. Step 3: Cross multiply
    251.28x = 376.92 × 143.82
  4. Step 4: Simplify right side
    251.28x = 54,208.63
  5. Step 5: Solve for x
    x = 54,208.63/251.28
  6. Step 6: Final answer
    x = 215.73

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