Finding the Third Proportional to 300 and 505
Calculator
Solution
The third proportional to 300 and 505 is: 850.08
Step by Step Solution
- Step 1: Write the proportion equation
300 : 505 = 505 : x - Step 2: Convert to fraction form
300/505 = 505/x - Step 3: Cross multiply
300x = 505 × 505 - Step 4: Simplify right side
300x = 255,025 - Step 5: Solve for x
x = 255,025/300 - Step 6: Final answer
x = 850.08
Related Problems
Find third proportional to 150 and 252.50
Half scale
Find third proportional to 600 and 1,010
Double scale
Find third proportional to 302 and 508
Similar ratio
Find third proportional to 450 and 757.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.