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Finding the Fourth Proportional to 481.48, 721.98 and 193

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Solution

The fourth proportional to 481.48, 721.98 and 193 is: 289.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.48 : 721.98 = 193 : x
  2. Step 2: Convert to fraction form
    481.48/721.98 = 193/x
  3. Step 3: Cross multiply
    481.48x = 721.98 × 193
  4. Step 4: Simplify right side
    481.48x = 139,342.14
  5. Step 5: Solve for x
    x = 139,342.14/481.48
  6. Step 6: Final answer
    x = 289.40

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