Finding the Third Proportional to 165 and 423
Calculator
Solution
The third proportional to 165 and 423 is: 1,084.42
Step by Step Solution
- Step 1: Write the proportion equation
165 : 423 = 423 : x - Step 2: Convert to fraction form
165/423 = 423/x - Step 3: Cross multiply
165x = 423 × 423 - Step 4: Simplify right side
165x = 178,929 - Step 5: Solve for x
x = 178,929/165 - Step 6: Final answer
x = 1,084.42
Related Problems
Find third proportional to 82.50 and 211.50
Half scale
Find third proportional to 330 and 846
Double scale
Find third proportional to 167 and 428
Similar ratio
Find third proportional to 247.50 and 634.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.