Finding the Fourth Proportional to 272.70, 409.18 and 110.70
Calculator
Solution
The fourth proportional to 272.70, 409.18 and 110.70 is: 166.10
Step by Step Solution
- Step 1: Write the proportion equation
272.70 : 409.18 = 110.70 : x - Step 2: Convert to fraction form
272.70/409.18 = 110.70/x - Step 3: Cross multiply
272.70x = 409.18 × 110.70 - Step 4: Simplify right side
272.70x = 45,296.23 - Step 5: Solve for x
x = 45,296.23/272.70 - Step 6: Final answer
x = 166.10
Related Problems
Find fourth proportional to 136.35, 204.59 and 55.35
Half scale
Find fourth proportional to 545.40, 818.36 and 221.40
Double scale
Find fourth proportional to 273.70, 410.68 and 111.70
Similar ratio
Find fourth proportional to 409.05, 613.77 and 166.05
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.