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Finding the Fourth Proportional to 299.28, 449.04 and 171

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Solution

The fourth proportional to 299.28, 449.04 and 171 is: 256.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.28 : 449.04 = 171 : x
  2. Step 2: Convert to fraction form
    299.28/449.04 = 171/x
  3. Step 3: Cross multiply
    299.28x = 449.04 × 171
  4. Step 4: Simplify right side
    299.28x = 76,785.84
  5. Step 5: Solve for x
    x = 76,785.84/299.28
  6. Step 6: Final answer
    x = 256.57

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