Finding the Third Proportional to 223.50 and 257
Calculator
Solution
The third proportional to 223.50 and 257 is: 295.52
Step by Step Solution
- Step 1: Write the proportion equation
223.50 : 257 = 257 : x - Step 2: Convert to fraction form
223.50/257 = 257/x - Step 3: Cross multiply
223.50x = 257 × 257 - Step 4: Simplify right side
223.50x = 66,049 - Step 5: Solve for x
x = 66,049/223.50 - Step 6: Final answer
x = 295.52
Related Problems
Find third proportional to 111.75 and 128.50
Half scale
Find third proportional to 447 and 514
Double scale
Find third proportional to 226 and 259
Similar ratio
Find third proportional to 335.25 and 385.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.