Finding the Third Proportional to 278.50 and 360
Calculator
Solution
The third proportional to 278.50 and 360 is: 465.35
Step by Step Solution
- Step 1: Write the proportion equation
278.50 : 360 = 360 : x - Step 2: Convert to fraction form
278.50/360 = 360/x - Step 3: Cross multiply
278.50x = 360 × 360 - Step 4: Simplify right side
278.50x = 129,600 - Step 5: Solve for x
x = 129,600/278.50 - Step 6: Final answer
x = 465.35
Related Problems
Find third proportional to 139.25 and 180
Half scale
Find third proportional to 557 and 720
Double scale
Find third proportional to 281 and 363
Similar ratio
Find third proportional to 417.75 and 540
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.