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Finding the Fourth Proportional to 550.36, 825.72 and 261.76

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Solution

The fourth proportional to 550.36, 825.72 and 261.76 is: 392.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.36 : 825.72 = 261.76 : x
  2. Step 2: Convert to fraction form
    550.36/825.72 = 261.76/x
  3. Step 3: Cross multiply
    550.36x = 825.72 × 261.76
  4. Step 4: Simplify right side
    550.36x = 216,140.47
  5. Step 5: Solve for x
    x = 216,140.47/550.36
  6. Step 6: Final answer
    x = 392.73

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