Finding the Third Proportional to 411 and 447.50
Calculator
Solution
The third proportional to 411 and 447.50 is: 487.24
Step by Step Solution
- Step 1: Write the proportion equation
411 : 447.50 = 447.50 : x - Step 2: Convert to fraction form
411/447.50 = 447.50/x - Step 3: Cross multiply
411x = 447.50 × 447.50 - Step 4: Simplify right side
411x = 200,256.25 - Step 5: Solve for x
x = 200,256.25/411 - Step 6: Final answer
x = 487.24
Related Problems
Find third proportional to 205.50 and 223.75
Half scale
Find third proportional to 822 and 895
Double scale
Find third proportional to 413 and 450
Similar ratio
Find third proportional to 616.50 and 671.25
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.