Finding the Fourth Proportional to 183.12, 274.79 and 74.99
Calculator
Solution
The fourth proportional to 183.12, 274.79 and 74.99 is: 112.52
Step by Step Solution
- Step 1: Write the proportion equation
183.12 : 274.79 = 74.99 : x - Step 2: Convert to fraction form
183.12/274.79 = 74.99/x - Step 3: Cross multiply
183.12x = 274.79 × 74.99 - Step 4: Simplify right side
183.12x = 20,605.71 - Step 5: Solve for x
x = 20,605.71/183.12 - Step 6: Final answer
x = 112.52
Related Problems
Find fourth proportional to 91.56, 137.39 and 37.49
Half scale
Find fourth proportional to 366.25, 549.57 and 149.98
Double scale
Find fourth proportional to 184.12, 276.29 and 75.99
Similar ratio
Find fourth proportional to 274.68, 412.18 and 112.48
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.