Finding the Fourth Proportional to 291.41, 437.13 and 74.99
Calculator
Solution
The fourth proportional to 291.41, 437.13 and 74.99 is: 112.49
Step by Step Solution
- Step 1: Write the proportion equation
291.41 : 437.13 = 74.99 : x - Step 2: Convert to fraction form
291.41/437.13 = 74.99/x - Step 3: Cross multiply
291.41x = 437.13 × 74.99 - Step 4: Simplify right side
291.41x = 32,779.94 - Step 5: Solve for x
x = 32,779.94/291.41 - Step 6: Final answer
x = 112.49
Related Problems
Find fourth proportional to 145.71, 218.57 and 37.49
Half scale
Find fourth proportional to 582.82, 874.27 and 149.98
Double scale
Find fourth proportional to 292.41, 438.63 and 75.99
Similar ratio
Find fourth proportional to 437.12, 655.70 and 112.48
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.