Finding the Third Proportional to 377 and 407
Calculator
Solution
The third proportional to 377 and 407 is: 439.39
Step by Step Solution
- Step 1: Write the proportion equation
377 : 407 = 407 : x - Step 2: Convert to fraction form
377/407 = 407/x - Step 3: Cross multiply
377x = 407 × 407 - Step 4: Simplify right side
377x = 165,649 - Step 5: Solve for x
x = 165,649/377 - Step 6: Final answer
x = 439.39
Related Problems
Find third proportional to 188.50 and 203.50
Half scale
Find third proportional to 754 and 814
Double scale
Find third proportional to 379 and 409
Similar ratio
Find third proportional to 565.50 and 610.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.