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Finding the Fourth Proportional to 451.55, 677.38 and 126.92

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Solution

The fourth proportional to 451.55, 677.38 and 126.92 is: 190.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.55 : 677.38 = 126.92 : x
  2. Step 2: Convert to fraction form
    451.55/677.38 = 126.92/x
  3. Step 3: Cross multiply
    451.55x = 677.38 × 126.92
  4. Step 4: Simplify right side
    451.55x = 85,973.07
  5. Step 5: Solve for x
    x = 85,973.07/451.55
  6. Step 6: Final answer
    x = 190.40

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