Finding the Fourth Proportional to 252.52, 378.90 and 181
Calculator
Solution
The fourth proportional to 252.52, 378.90 and 181 is: 271.59
Step by Step Solution
- Step 1: Write the proportion equation
252.52 : 378.90 = 181 : x - Step 2: Convert to fraction form
252.52/378.90 = 181/x - Step 3: Cross multiply
252.52x = 378.90 × 181 - Step 4: Simplify right side
252.52x = 68,580.90 - Step 5: Solve for x
x = 68,580.90/252.52 - Step 6: Final answer
x = 271.59
Related Problems
Find fourth proportional to 126.26, 189.45 and 90.50
Half scale
Find fourth proportional to 505.04, 757.80 and 362
Double scale
Find fourth proportional to 253.52, 380.40 and 182
Similar ratio
Find fourth proportional to 378.78, 568.35 and 271.50
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.