Finding the Third Proportional to 289 and 580
Calculator
Solution
The third proportional to 289 and 580 is: 1,164.01
Step by Step Solution
- Step 1: Write the proportion equation
289 : 580 = 580 : x - Step 2: Convert to fraction form
289/580 = 580/x - Step 3: Cross multiply
289x = 580 × 580 - Step 4: Simplify right side
289x = 336,400 - Step 5: Solve for x
x = 336,400/289 - Step 6: Final answer
x = 1,164.01
Related Problems
Find third proportional to 144.50 and 290
Half scale
Find third proportional to 578 and 1,160
Double scale
Find third proportional to 291 and 584
Similar ratio
Find third proportional to 433.50 and 870
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.01) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.