Finding the Fourth Proportional to 353.69, 488.15 and 196.37

Step by Step Solution

1. Step 1: Write the proportion equation
   353.69 : 488.15 = 196.37 : x
2. Step 2: Convert to fraction form
   353.69/488.15 = 196.37/x
3. Step 3: Cross multiply
   353.69x = 488.15 × 196.37
4. Step 4: Simplify right side
   353.69x = 95,860.83
5. Step 5: Solve for x
   x = 95,860.83/353.69
6. Step 6: Final answer
   x = 271.03