Finding the Third Proportional to 305 and 510
Calculator
Solution
The third proportional to 305 and 510 is: 852.79
Step by Step Solution
- Step 1: Write the proportion equation
305 : 510 = 510 : x - Step 2: Convert to fraction form
305/510 = 510/x - Step 3: Cross multiply
305x = 510 × 510 - Step 4: Simplify right side
305x = 260,100 - Step 5: Solve for x
x = 260,100/305 - Step 6: Final answer
x = 852.79
Related Problems
Find third proportional to 152.50 and 255
Half scale
Find third proportional to 610 and 1,020
Double scale
Find third proportional to 307 and 513
Similar ratio
Find third proportional to 457.50 and 765
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.