Finding the Fourth Proportional to 441.78, 662.74 and 149.31
Calculator
Solution
The fourth proportional to 441.78, 662.74 and 149.31 is: 223.99
Step by Step Solution
- Step 1: Write the proportion equation
441.78 : 662.74 = 149.31 : x - Step 2: Convert to fraction form
441.78/662.74 = 149.31/x - Step 3: Cross multiply
441.78x = 662.74 × 149.31 - Step 4: Simplify right side
441.78x = 98,953.71 - Step 5: Solve for x
x = 98,953.71/441.78 - Step 6: Final answer
x = 223.99
Related Problems
Find fourth proportional to 220.89, 331.37 and 74.66
Half scale
Find fourth proportional to 883.56, 1,325.48 and 298.62
Double scale
Find fourth proportional to 442.78, 664.24 and 150.31
Similar ratio
Find fourth proportional to 662.67, 994.11 and 223.97
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.