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Finding the Fourth Proportional to 551.28, 826.84 and 140.38

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Solution

The fourth proportional to 551.28, 826.84 and 140.38 is: 210.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.28 : 826.84 = 140.38 : x
  2. Step 2: Convert to fraction form
    551.28/826.84 = 140.38/x
  3. Step 3: Cross multiply
    551.28x = 826.84 × 140.38
  4. Step 4: Simplify right side
    551.28x = 116,066.96
  5. Step 5: Solve for x
    x = 116,066.96/551.28
  6. Step 6: Final answer
    x = 210.54

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