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Finding the Fourth Proportional to 663.12, 994.14 and 446.76

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Solution

The fourth proportional to 663.12, 994.14 and 446.76 is: 669.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.12 : 994.14 = 446.76 : x
  2. Step 2: Convert to fraction form
    663.12/994.14 = 446.76/x
  3. Step 3: Cross multiply
    663.12x = 994.14 × 446.76
  4. Step 4: Simplify right side
    663.12x = 444,141.99
  5. Step 5: Solve for x
    x = 444,141.99/663.12
  6. Step 6: Final answer
    x = 669.78

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