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Finding the Fourth Proportional to 416.03, 624.20 and 172.54

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Solution

The fourth proportional to 416.03, 624.20 and 172.54 is: 258.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.03 : 624.20 = 172.54 : x
  2. Step 2: Convert to fraction form
    416.03/624.20 = 172.54/x
  3. Step 3: Cross multiply
    416.03x = 624.20 × 172.54
  4. Step 4: Simplify right side
    416.03x = 107,696.78
  5. Step 5: Solve for x
    x = 107,696.78/416.03
  6. Step 6: Final answer
    x = 258.87

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