Finding the Third Proportional to 212 and 306
Calculator
Solution
The third proportional to 212 and 306 is: 441.68
Step by Step Solution
- Step 1: Write the proportion equation
212 : 306 = 306 : x - Step 2: Convert to fraction form
212/306 = 306/x - Step 3: Cross multiply
212x = 306 × 306 - Step 4: Simplify right side
212x = 93,636 - Step 5: Solve for x
x = 93,636/212 - Step 6: Final answer
x = 441.68
Related Problems
Find third proportional to 106 and 153
Half scale
Find third proportional to 424 and 612
Double scale
Find third proportional to 214 and 309
Similar ratio
Find third proportional to 318 and 459
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.