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Finding the Fourth Proportional to 481.13, 721.62 and 156.43

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Solution

The fourth proportional to 481.13, 721.62 and 156.43 is: 234.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.13 : 721.62 = 156.43 : x
  2. Step 2: Convert to fraction form
    481.13/721.62 = 156.43/x
  3. Step 3: Cross multiply
    481.13x = 721.62 × 156.43
  4. Step 4: Simplify right side
    481.13x = 112,879.41
  5. Step 5: Solve for x
    x = 112,879.41/481.13
  6. Step 6: Final answer
    x = 234.61

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