Finding the Third Proportional to 853 and 980
Calculator
Solution
The third proportional to 853 and 980 is: 1,125.91
Step by Step Solution
- Step 1: Write the proportion equation
853 : 980 = 980 : x - Step 2: Convert to fraction form
853/980 = 980/x - Step 3: Cross multiply
853x = 980 × 980 - Step 4: Simplify right side
853x = 960,400 - Step 5: Solve for x
x = 960,400/853 - Step 6: Final answer
x = 1,125.91
Related Problems
Find third proportional to 426.50 and 490
Half scale
Find third proportional to 1,706 and 1,960
Double scale
Find third proportional to 855 and 982
Similar ratio
Find third proportional to 1,279.50 and 1,470
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.