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Finding the Fourth Proportional to 381.06, 571.66 and 137.62

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Solution

The fourth proportional to 381.06, 571.66 and 137.62 is: 206.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.06 : 571.66 = 137.62 : x
  2. Step 2: Convert to fraction form
    381.06/571.66 = 137.62/x
  3. Step 3: Cross multiply
    381.06x = 571.66 × 137.62
  4. Step 4: Simplify right side
    381.06x = 78,671.85
  5. Step 5: Solve for x
    x = 78,671.85/381.06
  6. Step 6: Final answer
    x = 206.46

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