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Finding the Fourth Proportional to 638.72, 958.44 and 273.48

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Solution

The fourth proportional to 638.72, 958.44 and 273.48 is: 410.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.72 : 958.44 = 273.48 : x
  2. Step 2: Convert to fraction form
    638.72/958.44 = 273.48/x
  3. Step 3: Cross multiply
    638.72x = 958.44 × 273.48
  4. Step 4: Simplify right side
    638.72x = 262,114.17
  5. Step 5: Solve for x
    x = 262,114.17/638.72
  6. Step 6: Final answer
    x = 410.37

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