Finding the Fourth Proportional to 586.18, 879.39 and 220.99
Calculator
Solution
The fourth proportional to 586.18, 879.39 and 220.99 is: 331.53
Step by Step Solution
- Step 1: Write the proportion equation
586.18 : 879.39 = 220.99 : x - Step 2: Convert to fraction form
586.18/879.39 = 220.99/x - Step 3: Cross multiply
586.18x = 879.39 × 220.99 - Step 4: Simplify right side
586.18x = 194,336.40 - Step 5: Solve for x
x = 194,336.40/586.18 - Step 6: Final answer
x = 331.53
Related Problems
Find fourth proportional to 293.09, 439.70 and 110.50
Half scale
Find fourth proportional to 1,172.36, 1,758.78 and 441.98
Double scale
Find fourth proportional to 587.18, 880.89 and 221.99
Similar ratio
Find fourth proportional to 879.27, 1,319.09 and 331.49
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.