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Finding the Fourth Proportional to 426.10, 639.02 and 194.86

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Solution

The fourth proportional to 426.10, 639.02 and 194.86 is: 292.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.10 : 639.02 = 194.86 : x
  2. Step 2: Convert to fraction form
    426.10/639.02 = 194.86/x
  3. Step 3: Cross multiply
    426.10x = 639.02 × 194.86
  4. Step 4: Simplify right side
    426.10x = 124,519.44
  5. Step 5: Solve for x
    x = 124,519.44/426.10
  6. Step 6: Final answer
    x = 292.23

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