Finding the Fourth Proportional to 440.44, 660.69 and 206.18
Calculator
Solution
The fourth proportional to 440.44, 660.69 and 206.18 is: 309.28
Step by Step Solution
- Step 1: Write the proportion equation
440.44 : 660.69 = 206.18 : x - Step 2: Convert to fraction form
440.44/660.69 = 206.18/x - Step 3: Cross multiply
440.44x = 660.69 × 206.18 - Step 4: Simplify right side
440.44x = 136,220.24 - Step 5: Solve for x
x = 136,220.24/440.44 - Step 6: Final answer
x = 309.28
Related Problems
Find fourth proportional to 220.22, 330.35 and 103.09
Half scale
Find fourth proportional to 880.88, 1,321.38 and 412.36
Double scale
Find fourth proportional to 441.44, 662.19 and 207.18
Similar ratio
Find fourth proportional to 660.66, 991.04 and 309.27
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.