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Finding the Fourth Proportional to 338.55, 467.13 and 198.69

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Solution

The fourth proportional to 338.55, 467.13 and 198.69 is: 274.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.55 : 467.13 = 198.69 : x
  2. Step 2: Convert to fraction form
    338.55/467.13 = 198.69/x
  3. Step 3: Cross multiply
    338.55x = 467.13 × 198.69
  4. Step 4: Simplify right side
    338.55x = 92,814.06
  5. Step 5: Solve for x
    x = 92,814.06/338.55
  6. Step 6: Final answer
    x = 274.15

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