Finding the Fourth Proportional to 180.90, 249.66 and 110.99
Calculator
Solution
The fourth proportional to 180.90, 249.66 and 110.99 is: 153.18
Step by Step Solution
- Step 1: Write the proportion equation
180.90 : 249.66 = 110.99 : x - Step 2: Convert to fraction form
180.90/249.66 = 110.99/x - Step 3: Cross multiply
180.90x = 249.66 × 110.99 - Step 4: Simplify right side
180.90x = 27,709.76 - Step 5: Solve for x
x = 27,709.76/180.90 - Step 6: Final answer
x = 153.18
Related Problems
Find fourth proportional to 90.45, 124.83 and 55.50
Half scale
Find fourth proportional to 361.80, 499.32 and 221.98
Double scale
Find fourth proportional to 181.90, 251.04 and 111.99
Similar ratio
Find fourth proportional to 271.35, 374.49 and 166.49
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.