Finding the Fourth Proportional to 315.44, 435.18 and 197.36
Calculator
Solution
The fourth proportional to 315.44, 435.18 and 197.36 is: 272.28
Step by Step Solution
- Step 1: Write the proportion equation
315.44 : 435.18 = 197.36 : x - Step 2: Convert to fraction form
315.44/435.18 = 197.36/x - Step 3: Cross multiply
315.44x = 435.18 × 197.36 - Step 4: Simplify right side
315.44x = 85,887.99 - Step 5: Solve for x
x = 85,887.99/315.44 - Step 6: Final answer
x = 272.28
Related Problems
Find fourth proportional to 157.72, 217.59 and 98.68
Half scale
Find fourth proportional to 630.87, 870.36 and 394.72
Double scale
Find fourth proportional to 316.44, 436.56 and 198.36
Similar ratio
Find fourth proportional to 473.15, 652.77 and 296.04
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.