Finding the Fourth Proportional to 299.99, 449.99 and 137.69
Calculator
Solution
The fourth proportional to 299.99, 449.99 and 137.69 is: 206.53
Step by Step Solution
- Step 1: Write the proportion equation
299.99 : 449.99 = 137.69 : x - Step 2: Convert to fraction form
299.99/449.99 = 137.69/x - Step 3: Cross multiply
299.99x = 449.99 × 137.69 - Step 4: Simplify right side
299.99x = 61,956.18 - Step 5: Solve for x
x = 61,956.18/299.99 - Step 6: Final answer
x = 206.53
Related Problems
Find fourth proportional to 149.99, 224.99 and 68.84
Half scale
Find fourth proportional to 599.97, 899.97 and 275.37
Double scale
Find fourth proportional to 300.99, 451.49 and 138.69
Similar ratio
Find fourth proportional to 449.98, 674.98 and 206.53
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.