Finding the Fourth Proportional to 193.08, 289.64 and 84.95
Calculator
Solution
The fourth proportional to 193.08, 289.64 and 84.95 is: 127.43
Step by Step Solution
- Step 1: Write the proportion equation
193.08 : 289.64 = 84.95 : x - Step 2: Convert to fraction form
193.08/289.64 = 84.95/x - Step 3: Cross multiply
193.08x = 289.64 × 84.95 - Step 4: Simplify right side
193.08x = 24,604.77 - Step 5: Solve for x
x = 24,604.77/193.08 - Step 6: Final answer
x = 127.43
Related Problems
Find fourth proportional to 96.54, 144.82 and 42.47
Half scale
Find fourth proportional to 386.17, 579.29 and 169.90
Double scale
Find fourth proportional to 194.08, 291.14 and 85.95
Similar ratio
Find fourth proportional to 289.63, 434.46 and 127.42
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.