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Finding the Fourth Proportional to 415.08, 622.28 and 171.46

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Solution

The fourth proportional to 415.08, 622.28 and 171.46 is: 257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.08 : 622.28 = 171.46 : x
  2. Step 2: Convert to fraction form
    415.08/622.28 = 171.46/x
  3. Step 3: Cross multiply
    415.08x = 622.28 × 171.46
  4. Step 4: Simplify right side
    415.08x = 106,696.13
  5. Step 5: Solve for x
    x = 106,696.13/415.08
  6. Step 6: Final answer
    x = 257.05

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