Finding the Fourth Proportional to 307.75, 425.01 and 229.99
Calculator
Solution
The fourth proportional to 307.75, 425.01 and 229.99 is: 317.62
Step by Step Solution
- Step 1: Write the proportion equation
307.75 : 425.01 = 229.99 : x - Step 2: Convert to fraction form
307.75/425.01 = 229.99/x - Step 3: Cross multiply
307.75x = 425.01 × 229.99 - Step 4: Simplify right side
307.75x = 97,748.05 - Step 5: Solve for x
x = 97,748.05/307.75 - Step 6: Final answer
x = 317.62
Related Problems
Find fourth proportional to 153.88, 212.51 and 115.00
Half scale
Find fourth proportional to 615.50, 850.02 and 459.98
Double scale
Find fourth proportional to 308.75, 426.39 and 230.99
Similar ratio
Find fourth proportional to 461.63, 637.52 and 344.99
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.