Finding the Third Proportional to 256 and 307
Calculator
Solution
The third proportional to 256 and 307 is: 368.16
Step by Step Solution
- Step 1: Write the proportion equation
256 : 307 = 307 : x - Step 2: Convert to fraction form
256/307 = 307/x - Step 3: Cross multiply
256x = 307 × 307 - Step 4: Simplify right side
256x = 94,249 - Step 5: Solve for x
x = 94,249/256 - Step 6: Final answer
x = 368.16
Related Problems
Find third proportional to 128 and 153.50
Half scale
Find third proportional to 512 and 614
Double scale
Find third proportional to 258 and 309
Similar ratio
Find third proportional to 384 and 460.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.