Finding the Third Proportional to 276 and 318.50
Calculator
Solution
The third proportional to 276 and 318.50 is: 367.54
Step by Step Solution
- Step 1: Write the proportion equation
276 : 318.50 = 318.50 : x - Step 2: Convert to fraction form
276/318.50 = 318.50/x - Step 3: Cross multiply
276x = 318.50 × 318.50 - Step 4: Simplify right side
276x = 101,442.25 - Step 5: Solve for x
x = 101,442.25/276 - Step 6: Final answer
x = 367.54
Related Problems
Find third proportional to 138 and 159.25
Half scale
Find third proportional to 552 and 637
Double scale
Find third proportional to 278 and 321
Similar ratio
Find third proportional to 414 and 477.75
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.