Finding the Fourth Proportional to 132.26, 198.26 and 86.63
Calculator
Solution
The fourth proportional to 132.26, 198.26 and 86.63 is: 129.86
Step by Step Solution
- Step 1: Write the proportion equation
132.26 : 198.26 = 86.63 : x - Step 2: Convert to fraction form
132.26/198.26 = 86.63/x - Step 3: Cross multiply
132.26x = 198.26 × 86.63 - Step 4: Simplify right side
132.26x = 17,175.26 - Step 5: Solve for x
x = 17,175.26/132.26 - Step 6: Final answer
x = 129.86
Related Problems
Find fourth proportional to 66.13, 99.13 and 43.32
Half scale
Find fourth proportional to 264.52, 396.52 and 173.26
Double scale
Find fourth proportional to 133.26, 199.76 and 87.63
Similar ratio
Find fourth proportional to 198.39, 297.39 and 129.95
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.