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Finding the Fourth Proportional to 345.91, 477.25 and 198.49

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Solution

The fourth proportional to 345.91, 477.25 and 198.49 is: 273.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.91 : 477.25 = 198.49 : x
  2. Step 2: Convert to fraction form
    345.91/477.25 = 198.49/x
  3. Step 3: Cross multiply
    345.91x = 477.25 × 198.49
  4. Step 4: Simplify right side
    345.91x = 94,729.35
  5. Step 5: Solve for x
    x = 94,729.35/345.91
  6. Step 6: Final answer
    x = 273.86

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