Finding the Fourth Proportional to 42.25, 63.25 and 30.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42.25 : 63.25 = 30.82 : x
2. Step 2: Convert to fraction form
   42.25/63.25 = 30.82/x
3. Step 3: Cross multiply
   42.25x = 63.25 × 30.82
4. Step 4: Simplify right side
   42.25x = 1,949.37
5. Step 5: Solve for x
   x = 1,949.37/42.25
6. Step 6: Final answer
   x = 46.14