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Finding the Fourth Proportional to 631.98, 947.84 and 199.17

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Solution

The fourth proportional to 631.98, 947.84 and 199.17 is: 298.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.98 : 947.84 = 199.17 : x
  2. Step 2: Convert to fraction form
    631.98/947.84 = 199.17/x
  3. Step 3: Cross multiply
    631.98x = 947.84 × 199.17
  4. Step 4: Simplify right side
    631.98x = 188,780.30
  5. Step 5: Solve for x
    x = 188,780.30/631.98
  6. Step 6: Final answer
    x = 298.71

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