Finding the Fourth Proportional to 352.17, 528.39 and 135.75
Calculator
Solution
The fourth proportional to 352.17, 528.39 and 135.75 is: 203.68
Step by Step Solution
- Step 1: Write the proportion equation
352.17 : 528.39 = 135.75 : x - Step 2: Convert to fraction form
352.17/528.39 = 135.75/x - Step 3: Cross multiply
352.17x = 528.39 × 135.75 - Step 4: Simplify right side
352.17x = 71,728.94 - Step 5: Solve for x
x = 71,728.94/352.17 - Step 6: Final answer
x = 203.68
Related Problems
Find fourth proportional to 176.09, 264.20 and 67.88
Half scale
Find fourth proportional to 704.34, 1,056.78 and 271.50
Double scale
Find fourth proportional to 353.17, 529.89 and 136.75
Similar ratio
Find fourth proportional to 528.26, 792.59 and 203.63
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.