Finding the Fourth Proportional to 344.94, 475.11 and 318.99
Calculator
Solution
The fourth proportional to 344.94, 475.11 and 318.99 is: 439.37
Step by Step Solution
- Step 1: Write the proportion equation
344.94 : 475.11 = 318.99 : x - Step 2: Convert to fraction form
344.94/475.11 = 318.99/x - Step 3: Cross multiply
344.94x = 475.11 × 318.99 - Step 4: Simplify right side
344.94x = 151,555.34 - Step 5: Solve for x
x = 151,555.34/344.94 - Step 6: Final answer
x = 439.37
Related Problems
Find fourth proportional to 172.47, 237.56 and 159.50
Half scale
Find fourth proportional to 689.88, 950.22 and 637.98
Double scale
Find fourth proportional to 345.94, 476.49 and 319.99
Similar ratio
Find fourth proportional to 517.41, 712.67 and 478.49
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.