Finding the Fourth Proportional to 180.12, 270.14 and 97.81
Calculator
Solution
The fourth proportional to 180.12, 270.14 and 97.81 is: 146.68
Step by Step Solution
- Step 1: Write the proportion equation
180.12 : 270.14 = 97.81 : x - Step 2: Convert to fraction form
180.12/270.14 = 97.81/x - Step 3: Cross multiply
180.12x = 270.14 × 97.81 - Step 4: Simplify right side
180.12x = 26,421.23 - Step 5: Solve for x
x = 26,421.23/180.12 - Step 6: Final answer
x = 146.68
Related Problems
Find fourth proportional to 90.06, 135.07 and 48.90
Half scale
Find fourth proportional to 360.25, 540.27 and 195.62
Double scale
Find fourth proportional to 181.12, 271.63 and 98.81
Similar ratio
Find fourth proportional to 270.19, 405.20 and 146.71
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.