Finding the Fourth Proportional to 392.42, 541.68 and 336.93
Calculator
Solution
The fourth proportional to 392.42, 541.68 and 336.93 is: 465.09
Step by Step Solution
- Step 1: Write the proportion equation
392.42 : 541.68 = 336.93 : x - Step 2: Convert to fraction form
392.42/541.68 = 336.93/x - Step 3: Cross multiply
392.42x = 541.68 × 336.93 - Step 4: Simplify right side
392.42x = 182,508.24 - Step 5: Solve for x
x = 182,508.24/392.42 - Step 6: Final answer
x = 465.09
Related Problems
Find fourth proportional to 196.21, 270.84 and 168.47
Half scale
Find fourth proportional to 784.83, 1,083.36 and 673.86
Double scale
Find fourth proportional to 393.42, 543.06 and 337.93
Similar ratio
Find fourth proportional to 588.62, 812.52 and 505.40
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.