Finding the Fourth Proportional to 459.62, 689.00 and 170.99
Calculator
Solution
The fourth proportional to 459.62, 689.00 and 170.99 is: 256.32
Step by Step Solution
- Step 1: Write the proportion equation
459.62 : 689.00 = 170.99 : x - Step 2: Convert to fraction form
459.62/689.00 = 170.99/x - Step 3: Cross multiply
459.62x = 689.00 × 170.99 - Step 4: Simplify right side
459.62x = 117,811.26 - Step 5: Solve for x
x = 117,811.26/459.62 - Step 6: Final answer
x = 256.32
Related Problems
Find fourth proportional to 229.81, 344.50 and 85.50
Half scale
Find fourth proportional to 919.24, 1,377.99 and 341.98
Double scale
Find fourth proportional to 460.62, 690.49 and 171.99
Similar ratio
Find fourth proportional to 689.43, 1,033.49 and 256.49
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.