Finding the Fourth Proportional to 305.75, 422.07 and 200.99
Calculator
Solution
The fourth proportional to 305.75, 422.07 and 200.99 is: 277.45
Step by Step Solution
- Step 1: Write the proportion equation
305.75 : 422.07 = 200.99 : x - Step 2: Convert to fraction form
305.75/422.07 = 200.99/x - Step 3: Cross multiply
305.75x = 422.07 × 200.99 - Step 4: Simplify right side
305.75x = 84,831.85 - Step 5: Solve for x
x = 84,831.85/305.75 - Step 6: Final answer
x = 277.45
Related Problems
Find fourth proportional to 152.88, 211.04 and 100.50
Half scale
Find fourth proportional to 611.50, 844.14 and 401.98
Double scale
Find fourth proportional to 306.75, 423.45 and 201.99
Similar ratio
Find fourth proportional to 458.63, 633.11 and 301.49
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.