Finding the Third Proportional to 201 and 215
Calculator
Solution
The third proportional to 201 and 215 is: 229.98
Step by Step Solution
- Step 1: Write the proportion equation
201 : 215 = 215 : x - Step 2: Convert to fraction form
201/215 = 215/x - Step 3: Cross multiply
201x = 215 × 215 - Step 4: Simplify right side
201x = 46,225 - Step 5: Solve for x
x = 46,225/201 - Step 6: Final answer
x = 229.98
Related Problems
Find third proportional to 100.50 and 107.50
Half scale
Find third proportional to 402 and 430
Double scale
Find third proportional to 203 and 217
Similar ratio
Find third proportional to 301.50 and 322.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.