Finding the Third Proportional to 149 and 153
Calculator
Solution
The third proportional to 149 and 153 is: 157.11
Step by Step Solution
- Step 1: Write the proportion equation
149 : 153 = 153 : x - Step 2: Convert to fraction form
149/153 = 153/x - Step 3: Cross multiply
149x = 153 × 153 - Step 4: Simplify right side
149x = 23,409 - Step 5: Solve for x
x = 23,409/149 - Step 6: Final answer
x = 157.11
Related Problems
Find third proportional to 74.50 and 76.50
Half scale
Find third proportional to 298 and 306
Double scale
Find third proportional to 151 and 155
Similar ratio
Find third proportional to 223.50 and 229.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.