Finding the Third Proportional to 298.50 and 513
Calculator
Solution
The third proportional to 298.50 and 513 is: 881.64
Step by Step Solution
- Step 1: Write the proportion equation
298.50 : 513 = 513 : x - Step 2: Convert to fraction form
298.50/513 = 513/x - Step 3: Cross multiply
298.50x = 513 × 513 - Step 4: Simplify right side
298.50x = 263,169 - Step 5: Solve for x
x = 263,169/298.50 - Step 6: Final answer
x = 881.64
Related Problems
Find third proportional to 149.25 and 256.50
Half scale
Find third proportional to 597 and 1,026
Double scale
Find third proportional to 301 and 516
Similar ratio
Find third proportional to 447.75 and 769.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.