Finding the Fourth Proportional to 272.70, 409.86 and 203.99
Calculator
Solution
The fourth proportional to 272.70, 409.86 and 203.99 is: 306.58
Step by Step Solution
- Step 1: Write the proportion equation
272.70 : 409.86 = 203.99 : x - Step 2: Convert to fraction form
272.70/409.86 = 203.99/x - Step 3: Cross multiply
272.70x = 409.86 × 203.99 - Step 4: Simplify right side
272.70x = 83,605.29 - Step 5: Solve for x
x = 83,605.29/272.70 - Step 6: Final answer
x = 306.58
Related Problems
Find fourth proportional to 136.35, 204.93 and 101.99
Half scale
Find fourth proportional to 545.40, 819.72 and 407.97
Double scale
Find fourth proportional to 273.70, 411.36 and 204.99
Similar ratio
Find fourth proportional to 409.05, 614.79 and 305.98
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.