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Finding the Fourth Proportional to 539.23, 808.81 and 174.28

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Solution

The fourth proportional to 539.23, 808.81 and 174.28 is: 261.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.23 : 808.81 = 174.28 : x
  2. Step 2: Convert to fraction form
    539.23/808.81 = 174.28/x
  3. Step 3: Cross multiply
    539.23x = 808.81 × 174.28
  4. Step 4: Simplify right side
    539.23x = 140,959.41
  5. Step 5: Solve for x
    x = 140,959.41/539.23
  6. Step 6: Final answer
    x = 261.41

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