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Finding the Fourth Proportional to 443.45, 664.70 and 169.43

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Solution

The fourth proportional to 443.45, 664.70 and 169.43 is: 253.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.45 : 664.70 = 169.43 : x
  2. Step 2: Convert to fraction form
    443.45/664.70 = 169.43/x
  3. Step 3: Cross multiply
    443.45x = 664.70 × 169.43
  4. Step 4: Simplify right side
    443.45x = 112,615.95
  5. Step 5: Solve for x
    x = 112,615.95/443.45
  6. Step 6: Final answer
    x = 253.95

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