Finding the Third Proportional to 340 and 810.50
Calculator
Solution
The third proportional to 340 and 810.50 is: 1,932.09
Step by Step Solution
- Step 1: Write the proportion equation
340 : 810.50 = 810.50 : x - Step 2: Convert to fraction form
340/810.50 = 810.50/x - Step 3: Cross multiply
340x = 810.50 × 810.50 - Step 4: Simplify right side
340x = 656,910.25 - Step 5: Solve for x
x = 656,910.25/340 - Step 6: Final answer
x = 1,932.09
Related Problems
Find third proportional to 170 and 405.25
Half scale
Find third proportional to 680 and 1,621
Double scale
Find third proportional to 342 and 815
Similar ratio
Find third proportional to 510 and 1,215.75
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.