Finding the Fourth Proportional to 160.99, 221.66 and 129.97
Calculator
Solution
The fourth proportional to 160.99, 221.66 and 129.97 is: 178.95
Step by Step Solution
- Step 1: Write the proportion equation
160.99 : 221.66 = 129.97 : x - Step 2: Convert to fraction form
160.99/221.66 = 129.97/x - Step 3: Cross multiply
160.99x = 221.66 × 129.97 - Step 4: Simplify right side
160.99x = 28,808.70 - Step 5: Solve for x
x = 28,808.70/160.99 - Step 6: Final answer
x = 178.95
Related Problems
Find fourth proportional to 80.49, 110.83 and 64.98
Half scale
Find fourth proportional to 321.98, 443.32 and 259.93
Double scale
Find fourth proportional to 161.99, 223.04 and 130.97
Similar ratio
Find fourth proportional to 241.48, 332.49 and 194.95
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.