Finding the Fourth Proportional to 181.38, 271.89 and 89.99
Calculator
Solution
The fourth proportional to 181.38, 271.89 and 89.99 is: 134.89
Step by Step Solution
- Step 1: Write the proportion equation
181.38 : 271.89 = 89.99 : x - Step 2: Convert to fraction form
181.38/271.89 = 89.99/x - Step 3: Cross multiply
181.38x = 271.89 × 89.99 - Step 4: Simplify right side
181.38x = 24,466.66 - Step 5: Solve for x
x = 24,466.66/181.38 - Step 6: Final answer
x = 134.89
Related Problems
Find fourth proportional to 90.69, 135.95 and 44.99
Half scale
Find fourth proportional to 362.75, 543.79 and 179.97
Double scale
Find fourth proportional to 182.38, 273.39 and 90.99
Similar ratio
Find fourth proportional to 272.07, 407.84 and 134.98
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.