Finding the Third Proportional to 430 and 518
Calculator
Solution
The third proportional to 430 and 518 is: 624.01
Step by Step Solution
- Step 1: Write the proportion equation
430 : 518 = 518 : x - Step 2: Convert to fraction form
430/518 = 518/x - Step 3: Cross multiply
430x = 518 × 518 - Step 4: Simplify right side
430x = 268,324 - Step 5: Solve for x
x = 268,324/430 - Step 6: Final answer
x = 624.01
Related Problems
Find third proportional to 215 and 259
Half scale
Find third proportional to 860 and 1,036
Double scale
Find third proportional to 432 and 520
Similar ratio
Find third proportional to 645 and 777
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.