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Finding the Fourth Proportional to 456.27, 684.47 and 131.73

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Solution

The fourth proportional to 456.27, 684.47 and 131.73 is: 197.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.27 : 684.47 = 131.73 : x
  2. Step 2: Convert to fraction form
    456.27/684.47 = 131.73/x
  3. Step 3: Cross multiply
    456.27x = 684.47 × 131.73
  4. Step 4: Simplify right side
    456.27x = 90,165.23
  5. Step 5: Solve for x
    x = 90,165.23/456.27
  6. Step 6: Final answer
    x = 197.61

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