Finding the Fourth Proportional to 173.57, 260.49 and 86.99
Calculator
Solution
The fourth proportional to 173.57, 260.49 and 86.99 is: 130.55
Step by Step Solution
- Step 1: Write the proportion equation
173.57 : 260.49 = 86.99 : x - Step 2: Convert to fraction form
173.57/260.49 = 86.99/x - Step 3: Cross multiply
173.57x = 260.49 × 86.99 - Step 4: Simplify right side
173.57x = 22,660.03 - Step 5: Solve for x
x = 22,660.03/173.57 - Step 6: Final answer
x = 130.55
Related Problems
Find fourth proportional to 86.79, 130.25 and 43.50
Half scale
Find fourth proportional to 347.14, 520.98 and 173.98
Double scale
Find fourth proportional to 174.57, 261.99 and 87.99
Similar ratio
Find fourth proportional to 260.36, 390.74 and 130.49
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.