Finding the Fourth Proportional to 349.11, 481.79 and 201.80
Calculator
Solution
The fourth proportional to 349.11, 481.79 and 201.80 is: 278.49
Step by Step Solution
- Step 1: Write the proportion equation
349.11 : 481.79 = 201.80 : x - Step 2: Convert to fraction form
349.11/481.79 = 201.80/x - Step 3: Cross multiply
349.11x = 481.79 × 201.80 - Step 4: Simplify right side
349.11x = 97,223.32 - Step 5: Solve for x
x = 97,223.32/349.11 - Step 6: Final answer
x = 278.49
Related Problems
Find fourth proportional to 174.56, 240.90 and 100.90
Half scale
Find fourth proportional to 698.22, 963.59 and 403.59
Double scale
Find fourth proportional to 350.11, 483.17 and 202.80
Similar ratio
Find fourth proportional to 523.67, 722.69 and 302.69
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.