Finding the Fourth Proportional to 335.70, 503.74 and 199
Calculator
Solution
The fourth proportional to 335.70, 503.74 and 199 is: 298.61
Step by Step Solution
- Step 1: Write the proportion equation
335.70 : 503.74 = 199 : x - Step 2: Convert to fraction form
335.70/503.74 = 199/x - Step 3: Cross multiply
335.70x = 503.74 × 199 - Step 4: Simplify right side
335.70x = 100,244.26 - Step 5: Solve for x
x = 100,244.26/335.70 - Step 6: Final answer
x = 298.61
Related Problems
Find fourth proportional to 167.85, 251.87 and 99.50
Half scale
Find fourth proportional to 671.40, 1,007.48 and 398
Double scale
Find fourth proportional to 336.70, 505.24 and 200
Similar ratio
Find fourth proportional to 503.55, 755.61 and 298.50
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.