Finding the Fourth Proportional to 104.52, 155.67 and 99
Calculator
Solution
The fourth proportional to 104.52, 155.67 and 99 is: 147.45
Step by Step Solution
- Step 1: Write the proportion equation
104.52 : 155.67 = 99 : x - Step 2: Convert to fraction form
104.52/155.67 = 99/x - Step 3: Cross multiply
104.52x = 155.67 × 99 - Step 4: Simplify right side
104.52x = 15,411.33 - Step 5: Solve for x
x = 15,411.33/104.52 - Step 6: Final answer
x = 147.45
Related Problems
Find fourth proportional to 52.26, 77.84 and 49.50
Half scale
Find fourth proportional to 209.04, 311.34 and 198
Double scale
Find fourth proportional to 105.52, 157.16 and 100
Similar ratio
Find fourth proportional to 156.78, 233.51 and 148.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.