Finding the Third Proportional to 290.50 and 474
Calculator
Solution
The third proportional to 290.50 and 474 is: 773.41
Step by Step Solution
- Step 1: Write the proportion equation
290.50 : 474 = 474 : x - Step 2: Convert to fraction form
290.50/474 = 474/x - Step 3: Cross multiply
290.50x = 474 × 474 - Step 4: Simplify right side
290.50x = 224,676 - Step 5: Solve for x
x = 224,676/290.50 - Step 6: Final answer
x = 773.41
Related Problems
Find third proportional to 145.25 and 237
Half scale
Find third proportional to 581 and 948
Double scale
Find third proportional to 293 and 477
Similar ratio
Find third proportional to 435.75 and 711
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.