Finding the Third Proportional to 228 and 430
Calculator
Solution
The third proportional to 228 and 430 is: 810.96
Step by Step Solution
- Step 1: Write the proportion equation
228 : 430 = 430 : x - Step 2: Convert to fraction form
228/430 = 430/x - Step 3: Cross multiply
228x = 430 × 430 - Step 4: Simplify right side
228x = 184,900 - Step 5: Solve for x
x = 184,900/228 - Step 6: Final answer
x = 810.96
Related Problems
Find third proportional to 114 and 215
Half scale
Find third proportional to 456 and 860
Double scale
Find third proportional to 230 and 434
Similar ratio
Find third proportional to 342 and 645
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.