Finding the Third Proportional to 456 and 648
Calculator
Solution
The third proportional to 456 and 648 is: 920.84
Step by Step Solution
- Step 1: Write the proportion equation
456 : 648 = 648 : x - Step 2: Convert to fraction form
456/648 = 648/x - Step 3: Cross multiply
456x = 648 × 648 - Step 4: Simplify right side
456x = 419,904 - Step 5: Solve for x
x = 419,904/456 - Step 6: Final answer
x = 920.84
Related Problems
Find third proportional to 228 and 324
Half scale
Find third proportional to 912 and 1,296
Double scale
Find third proportional to 458 and 651
Similar ratio
Find third proportional to 684 and 972
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.