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Finding the Fourth Proportional to 454.25, 681.38 and 112.25

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Solution

The fourth proportional to 454.25, 681.38 and 112.25 is: 168.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.25 : 681.38 = 112.25 : x
  2. Step 2: Convert to fraction form
    454.25/681.38 = 112.25/x
  3. Step 3: Cross multiply
    454.25x = 681.38 × 112.25
  4. Step 4: Simplify right side
    454.25x = 76,484.91
  5. Step 5: Solve for x
    x = 76,484.91/454.25
  6. Step 6: Final answer
    x = 168.38

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