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Finding the Fourth Proportional to 329.75, 455.13 and 198.84

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Solution

The fourth proportional to 329.75, 455.13 and 198.84 is: 274.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.75 : 455.13 = 198.84 : x
  2. Step 2: Convert to fraction form
    329.75/455.13 = 198.84/x
  3. Step 3: Cross multiply
    329.75x = 455.13 × 198.84
  4. Step 4: Simplify right side
    329.75x = 90,498.05
  5. Step 5: Solve for x
    x = 90,498.05/329.75
  6. Step 6: Final answer
    x = 274.45

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