Finding the Third Proportional to 298 and 342
Calculator
Solution
The third proportional to 298 and 342 is: 392.50
Step by Step Solution
- Step 1: Write the proportion equation
298 : 342 = 342 : x - Step 2: Convert to fraction form
298/342 = 342/x - Step 3: Cross multiply
298x = 342 × 342 - Step 4: Simplify right side
298x = 116,964 - Step 5: Solve for x
x = 116,964/298 - Step 6: Final answer
x = 392.50
Related Problems
Find third proportional to 149 and 171
Half scale
Find third proportional to 596 and 684
Double scale
Find third proportional to 300 and 344
Similar ratio
Find third proportional to 447 and 513
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.