Finding the Third Proportional to 243.50 and 275
Calculator
Solution
The third proportional to 243.50 and 275 is: 310.57
Step by Step Solution
- Step 1: Write the proportion equation
243.50 : 275 = 275 : x - Step 2: Convert to fraction form
243.50/275 = 275/x - Step 3: Cross multiply
243.50x = 275 × 275 - Step 4: Simplify right side
243.50x = 75,625 - Step 5: Solve for x
x = 75,625/243.50 - Step 6: Final answer
x = 310.57
Related Problems
Find third proportional to 121.75 and 137.50
Half scale
Find third proportional to 487 and 550
Double scale
Find third proportional to 246 and 277
Similar ratio
Find third proportional to 365.25 and 412.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.