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Finding the Fourth Proportional to 392.25, 588.24 and 172.81

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Solution

The fourth proportional to 392.25, 588.24 and 172.81 is: 259.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.25 : 588.24 = 172.81 : x
  2. Step 2: Convert to fraction form
    392.25/588.24 = 172.81/x
  3. Step 3: Cross multiply
    392.25x = 588.24 × 172.81
  4. Step 4: Simplify right side
    392.25x = 101,652.28
  5. Step 5: Solve for x
    x = 101,652.28/392.25
  6. Step 6: Final answer
    x = 259.15

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