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Finding the Fourth Proportional to 346.28, 477.90 and 198.97

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Solution

The fourth proportional to 346.28, 477.90 and 198.97 is: 274.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.28 : 477.90 = 198.97 : x
  2. Step 2: Convert to fraction form
    346.28/477.90 = 198.97/x
  3. Step 3: Cross multiply
    346.28x = 477.90 × 198.97
  4. Step 4: Simplify right side
    346.28x = 95,086.57
  5. Step 5: Solve for x
    x = 95,086.57/346.28
  6. Step 6: Final answer
    x = 274.59

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