Finding the Fourth Proportional to 29.11, 43.69 and 25.31
Calculator
Solution
The fourth proportional to 29.11, 43.69 and 25.31 is: 37.99
Step by Step Solution
- Step 1: Write the proportion equation
29.11 : 43.69 = 25.31 : x - Step 2: Convert to fraction form
29.11/43.69 = 25.31/x - Step 3: Cross multiply
29.11x = 43.69 × 25.31 - Step 4: Simplify right side
29.11x = 1,105.89 - Step 5: Solve for x
x = 1,105.89/29.11 - Step 6: Final answer
x = 37.99
Related Problems
Find fourth proportional to 14.55, 21.84 and 12.66
Half scale
Find fourth proportional to 58.22, 87.38 and 50.63
Double scale
Find fourth proportional to 30.11, 45.19 and 26.31
Similar ratio
Find fourth proportional to 43.66, 65.53 and 37.97
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.