Finding the Fourth Proportional to 53.67, 80.55 and 50.70
Calculator
Solution
The fourth proportional to 53.67, 80.55 and 50.70 is: 76.09
Step by Step Solution
- Step 1: Write the proportion equation
53.67 : 80.55 = 50.70 : x - Step 2: Convert to fraction form
53.67/80.55 = 50.70/x - Step 3: Cross multiply
53.67x = 80.55 × 50.70 - Step 4: Simplify right side
53.67x = 4,083.89 - Step 5: Solve for x
x = 4,083.89/53.67 - Step 6: Final answer
x = 76.09
Related Problems
Find fourth proportional to 26.84, 40.28 and 25.35
Half scale
Find fourth proportional to 107.34, 161.10 and 101.40
Double scale
Find fourth proportional to 54.67, 82.05 and 51.70
Similar ratio
Find fourth proportional to 80.51, 120.83 and 76.05
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.