Finding the Fourth Proportional to 346.44, 478.11 and 199.12
Calculator
Solution
The fourth proportional to 346.44, 478.11 and 199.12 is: 274.80
Step by Step Solution
- Step 1: Write the proportion equation
346.44 : 478.11 = 199.12 : x - Step 2: Convert to fraction form
346.44/478.11 = 199.12/x - Step 3: Cross multiply
346.44x = 478.11 × 199.12 - Step 4: Simplify right side
346.44x = 95,201.26 - Step 5: Solve for x
x = 95,201.26/346.44 - Step 6: Final answer
x = 274.80
Related Problems
Find fourth proportional to 173.22, 239.06 and 99.56
Half scale
Find fourth proportional to 692.88, 956.22 and 398.24
Double scale
Find fourth proportional to 347.44, 479.49 and 200.12
Similar ratio
Find fourth proportional to 519.66, 717.17 and 298.68
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.