Finding the Third Proportional to 277 and 647.50
Calculator
Solution
The third proportional to 277 and 647.50 is: 1,513.56
Step by Step Solution
- Step 1: Write the proportion equation
277 : 647.50 = 647.50 : x - Step 2: Convert to fraction form
277/647.50 = 647.50/x - Step 3: Cross multiply
277x = 647.50 × 647.50 - Step 4: Simplify right side
277x = 419,256.25 - Step 5: Solve for x
x = 419,256.25/277 - Step 6: Final answer
x = 1,513.56
Related Problems
Find third proportional to 138.50 and 323.75
Half scale
Find third proportional to 554 and 1,295
Double scale
Find third proportional to 279 and 652
Similar ratio
Find third proportional to 415.50 and 971.25
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.