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Finding the Fourth Proportional to 319.97, 480.15 and 137.36

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Solution

The fourth proportional to 319.97, 480.15 and 137.36 is: 206.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.97 : 480.15 = 137.36 : x
  2. Step 2: Convert to fraction form
    319.97/480.15 = 137.36/x
  3. Step 3: Cross multiply
    319.97x = 480.15 × 137.36
  4. Step 4: Simplify right side
    319.97x = 65,954.60
  5. Step 5: Solve for x
    x = 65,954.60/319.97
  6. Step 6: Final answer
    x = 206.13

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