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Finding the Fourth Proportional to 425.16, 637.73 and 136.60

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Solution

The fourth proportional to 425.16, 637.73 and 136.60 is: 204.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.16 : 637.73 = 136.60 : x
  2. Step 2: Convert to fraction form
    425.16/637.73 = 136.60/x
  3. Step 3: Cross multiply
    425.16x = 637.73 × 136.60
  4. Step 4: Simplify right side
    425.16x = 87,112.67
  5. Step 5: Solve for x
    x = 87,112.67/425.16
  6. Step 6: Final answer
    x = 204.89

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