Finding the Third Proportional to 239 and 620.50
Calculator
Solution
The third proportional to 239 and 620.50 is: 1,610.96
Step by Step Solution
- Step 1: Write the proportion equation
239 : 620.50 = 620.50 : x - Step 2: Convert to fraction form
239/620.50 = 620.50/x - Step 3: Cross multiply
239x = 620.50 × 620.50 - Step 4: Simplify right side
239x = 385,020.25 - Step 5: Solve for x
x = 385,020.25/239 - Step 6: Final answer
x = 1,610.96
Related Problems
Find third proportional to 119.50 and 310.25
Half scale
Find third proportional to 478 and 1,241
Double scale
Find third proportional to 241 and 626
Similar ratio
Find third proportional to 358.50 and 930.75
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.