Finding the Third Proportional to 342 and 618
Calculator
Solution
The third proportional to 342 and 618 is: 1,116.74
Step by Step Solution
- Step 1: Write the proportion equation
342 : 618 = 618 : x - Step 2: Convert to fraction form
342/618 = 618/x - Step 3: Cross multiply
342x = 618 × 618 - Step 4: Simplify right side
342x = 381,924 - Step 5: Solve for x
x = 381,924/342 - Step 6: Final answer
x = 1,116.74
Related Problems
Find third proportional to 171 and 309
Half scale
Find third proportional to 684 and 1,236
Double scale
Find third proportional to 344 and 622
Similar ratio
Find third proportional to 513 and 927
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.