Finding the Fourth Proportional to 404.55, 606.74 and 157.75
Calculator
Solution
The fourth proportional to 404.55, 606.74 and 157.75 is: 236.59
Step by Step Solution
- Step 1: Write the proportion equation
404.55 : 606.74 = 157.75 : x - Step 2: Convert to fraction form
404.55/606.74 = 157.75/x - Step 3: Cross multiply
404.55x = 606.74 × 157.75 - Step 4: Simplify right side
404.55x = 95,713.24 - Step 5: Solve for x
x = 95,713.24/404.55 - Step 6: Final answer
x = 236.59
Related Problems
Find fourth proportional to 202.28, 303.37 and 78.88
Half scale
Find fourth proportional to 809.10, 1,213.48 and 315.50
Double scale
Find fourth proportional to 405.55, 608.24 and 158.75
Similar ratio
Find fourth proportional to 606.83, 910.11 and 236.63
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.