Finding the Fourth Proportional to 296.70, 445.08 and 91.26
Calculator
Solution
The fourth proportional to 296.70, 445.08 and 91.26 is: 136.90
Step by Step Solution
- Step 1: Write the proportion equation
296.70 : 445.08 = 91.26 : x - Step 2: Convert to fraction form
296.70/445.08 = 91.26/x - Step 3: Cross multiply
296.70x = 445.08 × 91.26 - Step 4: Simplify right side
296.70x = 40,618.00 - Step 5: Solve for x
x = 40,618.00/296.70 - Step 6: Final answer
x = 136.90
Related Problems
Find fourth proportional to 148.35, 222.54 and 45.63
Half scale
Find fourth proportional to 593.40, 890.16 and 182.52
Double scale
Find fourth proportional to 297.70, 446.58 and 92.26
Similar ratio
Find fourth proportional to 445.05, 667.62 and 136.89
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.