Finding the Third Proportional to 230 and 278
Calculator
Solution
The third proportional to 230 and 278 is: 336.02
Step by Step Solution
- Step 1: Write the proportion equation
230 : 278 = 278 : x - Step 2: Convert to fraction form
230/278 = 278/x - Step 3: Cross multiply
230x = 278 × 278 - Step 4: Simplify right side
230x = 77,284 - Step 5: Solve for x
x = 77,284/230 - Step 6: Final answer
x = 336.02
Related Problems
Find third proportional to 115 and 139
Half scale
Find third proportional to 460 and 556
Double scale
Find third proportional to 232 and 280
Similar ratio
Find third proportional to 345 and 417
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.