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Finding the Fourth Proportional to 467, 644.24 and 280.44

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Solution

The fourth proportional to 467, 644.24 and 280.44 is: 386.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    467 : 644.24 = 280.44 : x
  2. Step 2: Convert to fraction form
    467/644.24 = 280.44/x
  3. Step 3: Cross multiply
    467x = 644.24 × 280.44
  4. Step 4: Simplify right side
    467x = 180,670.67
  5. Step 5: Solve for x
    x = 180,670.67/467
  6. Step 6: Final answer
    x = 386.88

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