Finding the Fourth Proportional to 75.42, 104.09 and 46.31
Calculator
Solution
The fourth proportional to 75.42, 104.09 and 46.31 is: 63.92
Step by Step Solution
- Step 1: Write the proportion equation
75.42 : 104.09 = 46.31 : x - Step 2: Convert to fraction form
75.42/104.09 = 46.31/x - Step 3: Cross multiply
75.42x = 104.09 × 46.31 - Step 4: Simplify right side
75.42x = 4,820.78 - Step 5: Solve for x
x = 4,820.78/75.42 - Step 6: Final answer
x = 63.92
Related Problems
Find fourth proportional to 37.71, 52.05 and 23.16
Half scale
Find fourth proportional to 150.84, 208.19 and 92.63
Double scale
Find fourth proportional to 76.42, 105.47 and 47.31
Similar ratio
Find fourth proportional to 113.13, 156.14 and 69.47
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.