Finding the Fourth Proportional to 271.35, 406.80 and 108.99
Calculator
Solution
The fourth proportional to 271.35, 406.80 and 108.99 is: 163.39
Step by Step Solution
- Step 1: Write the proportion equation
271.35 : 406.80 = 108.99 : x - Step 2: Convert to fraction form
271.35/406.80 = 108.99/x - Step 3: Cross multiply
271.35x = 406.80 × 108.99 - Step 4: Simplify right side
271.35x = 44,337.13 - Step 5: Solve for x
x = 44,337.13/271.35 - Step 6: Final answer
x = 163.39
Related Problems
Find fourth proportional to 135.68, 203.40 and 54.50
Half scale
Find fourth proportional to 542.70, 813.60 and 217.98
Double scale
Find fourth proportional to 272.35, 408.30 and 109.99
Similar ratio
Find fourth proportional to 407.03, 610.20 and 163.49
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.