Finding the Fourth Proportional to 274.12, 408.58 and 271.99
Calculator
Solution
The fourth proportional to 274.12, 408.58 and 271.99 is: 405.41
Step by Step Solution
- Step 1: Write the proportion equation
274.12 : 408.58 = 271.99 : x - Step 2: Convert to fraction form
274.12/408.58 = 271.99/x - Step 3: Cross multiply
274.12x = 408.58 × 271.99 - Step 4: Simplify right side
274.12x = 111,129.67 - Step 5: Solve for x
x = 111,129.67/274.12 - Step 6: Final answer
x = 405.41
Related Problems
Find fourth proportional to 137.06, 204.29 and 136.00
Half scale
Find fourth proportional to 548.24, 817.16 and 543.98
Double scale
Find fourth proportional to 275.12, 410.07 and 272.99
Similar ratio
Find fourth proportional to 411.18, 612.87 and 407.99
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.