Finding the Third Proportional to 900 and 999
Calculator
Solution
The third proportional to 900 and 999 is: 1,108.89
Step by Step Solution
- Step 1: Write the proportion equation
900 : 999 = 999 : x - Step 2: Convert to fraction form
900/999 = 999/x - Step 3: Cross multiply
900x = 999 × 999 - Step 4: Simplify right side
900x = 998,001 - Step 5: Solve for x
x = 998,001/900 - Step 6: Final answer
x = 1,108.89
Related Problems
Find third proportional to 450 and 499.50
Half scale
Find third proportional to 1,800 and 1,998
Double scale
Find third proportional to 902 and 1,001
Similar ratio
Find third proportional to 1,350 and 1,498.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.