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Finding the Fourth Proportional to 278.00, 416.97 and 115.55

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Solution

The fourth proportional to 278.00, 416.97 and 115.55 is: 173.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.00 : 416.97 = 115.55 : x
  2. Step 2: Convert to fraction form
    278.00/416.97 = 115.55/x
  3. Step 3: Cross multiply
    278.00x = 416.97 × 115.55
  4. Step 4: Simplify right side
    278.00x = 48,181.93
  5. Step 5: Solve for x
    x = 48,181.93/278.00
  6. Step 6: Final answer
    x = 173.31

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