Finding the Fourth Proportional to 342.24, 513.08 and 149.84
Calculator
Solution
The fourth proportional to 342.24, 513.08 and 149.84 is: 224.64
Step by Step Solution
- Step 1: Write the proportion equation
342.24 : 513.08 = 149.84 : x - Step 2: Convert to fraction form
342.24/513.08 = 149.84/x - Step 3: Cross multiply
342.24x = 513.08 × 149.84 - Step 4: Simplify right side
342.24x = 76,879.91 - Step 5: Solve for x
x = 76,879.91/342.24 - Step 6: Final answer
x = 224.64
Related Problems
Find fourth proportional to 171.12, 256.54 and 74.92
Half scale
Find fourth proportional to 684.48, 1,026.16 and 299.68
Double scale
Find fourth proportional to 343.24, 514.58 and 150.84
Similar ratio
Find fourth proportional to 513.36, 769.62 and 224.76
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.