Finding the Third Proportional to 274 and 328
Calculator
Solution
The third proportional to 274 and 328 is: 392.64
Step by Step Solution
- Step 1: Write the proportion equation
274 : 328 = 328 : x - Step 2: Convert to fraction form
274/328 = 328/x - Step 3: Cross multiply
274x = 328 × 328 - Step 4: Simplify right side
274x = 107,584 - Step 5: Solve for x
x = 107,584/274 - Step 6: Final answer
x = 392.64
Related Problems
Find third proportional to 137 and 164
Half scale
Find third proportional to 548 and 656
Double scale
Find third proportional to 276 and 330
Similar ratio
Find third proportional to 411 and 492
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.