Finding the Third Proportional to 348 and 378
Calculator
Solution
The third proportional to 348 and 378 is: 410.59
Step by Step Solution
- Step 1: Write the proportion equation
348 : 378 = 378 : x - Step 2: Convert to fraction form
348/378 = 378/x - Step 3: Cross multiply
348x = 378 × 378 - Step 4: Simplify right side
348x = 142,884 - Step 5: Solve for x
x = 142,884/348 - Step 6: Final answer
x = 410.59
Related Problems
Find third proportional to 174 and 189
Half scale
Find third proportional to 696 and 756
Double scale
Find third proportional to 350 and 380
Similar ratio
Find third proportional to 522 and 567
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.