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Finding the Fourth Proportional to 270.12, 405.33 and 107.80

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Solution

The fourth proportional to 270.12, 405.33 and 107.80 is: 161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.12 : 405.33 = 107.80 : x
  2. Step 2: Convert to fraction form
    270.12/405.33 = 107.80/x
  3. Step 3: Cross multiply
    270.12x = 405.33 × 107.80
  4. Step 4: Simplify right side
    270.12x = 43,694.57
  5. Step 5: Solve for x
    x = 43,694.57/270.12
  6. Step 6: Final answer
    x = 161.76

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