Finding the Fourth Proportional to 240.99, 361.44 and 86.91
Calculator
Solution
The fourth proportional to 240.99, 361.44 and 86.91 is: 130.35
Step by Step Solution
- Step 1: Write the proportion equation
240.99 : 361.44 = 86.91 : x - Step 2: Convert to fraction form
240.99/361.44 = 86.91/x - Step 3: Cross multiply
240.99x = 361.44 × 86.91 - Step 4: Simplify right side
240.99x = 31,412.75 - Step 5: Solve for x
x = 31,412.75/240.99 - Step 6: Final answer
x = 130.35
Related Problems
Find fourth proportional to 120.50, 180.72 and 43.46
Half scale
Find fourth proportional to 481.98, 722.88 and 173.82
Double scale
Find fourth proportional to 241.99, 362.94 and 87.91
Similar ratio
Find fourth proportional to 361.49, 542.16 and 130.37
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.