Finding the Fourth Proportional to 333.34, 498.83 and 290.50

Step by Step Solution

1. Step 1: Write the proportion equation
   333.34 : 498.83 = 290.50 : x
2. Step 2: Convert to fraction form
   333.34/498.83 = 290.50/x
3. Step 3: Cross multiply
   333.34x = 498.83 × 290.50
4. Step 4: Simplify right side
   333.34x = 144,907.42
5. Step 5: Solve for x
   x = 144,907.42/333.34
6. Step 6: Final answer
   x = 434.72