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Finding the Fourth Proportional to 381.82, 572.77 and 107.92

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Solution

The fourth proportional to 381.82, 572.77 and 107.92 is: 161.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.82 : 572.77 = 107.92 : x
  2. Step 2: Convert to fraction form
    381.82/572.77 = 107.92/x
  3. Step 3: Cross multiply
    381.82x = 572.77 × 107.92
  4. Step 4: Simplify right side
    381.82x = 61,810.36
  5. Step 5: Solve for x
    x = 61,810.36/381.82
  6. Step 6: Final answer
    x = 161.88

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