Finding the Third Proportional to 128 and 350
Calculator
Solution
The third proportional to 128 and 350 is: 957.03
Step by Step Solution
- Step 1: Write the proportion equation
128 : 350 = 350 : x - Step 2: Convert to fraction form
128/350 = 350/x - Step 3: Cross multiply
128x = 350 × 350 - Step 4: Simplify right side
128x = 122,500 - Step 5: Solve for x
x = 122,500/128 - Step 6: Final answer
x = 957.03
Related Problems
Find third proportional to 64 and 175
Half scale
Find third proportional to 256 and 700
Double scale
Find third proportional to 130 and 355
Similar ratio
Find third proportional to 192 and 525
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.73) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.