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Finding the Fourth Proportional to 329.76, 494.64 and 137.25

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Solution

The fourth proportional to 329.76, 494.64 and 137.25 is: 205.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.76 : 494.64 = 137.25 : x
  2. Step 2: Convert to fraction form
    329.76/494.64 = 137.25/x
  3. Step 3: Cross multiply
    329.76x = 494.64 × 137.25
  4. Step 4: Simplify right side
    329.76x = 67,889.34
  5. Step 5: Solve for x
    x = 67,889.34/329.76
  6. Step 6: Final answer
    x = 205.88

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