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Finding the Fourth Proportional to 496.82, 745.54 and 172.42

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Solution

The fourth proportional to 496.82, 745.54 and 172.42 is: 258.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.82 : 745.54 = 172.42 : x
  2. Step 2: Convert to fraction form
    496.82/745.54 = 172.42/x
  3. Step 3: Cross multiply
    496.82x = 745.54 × 172.42
  4. Step 4: Simplify right side
    496.82x = 128,543.71
  5. Step 5: Solve for x
    x = 128,543.71/496.82
  6. Step 6: Final answer
    x = 258.73

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