Finding the Fourth Proportional to 358.74, 538.08 and 142.26
Calculator
Solution
The fourth proportional to 358.74, 538.08 and 142.26 is: 213.38
Step by Step Solution
- Step 1: Write the proportion equation
358.74 : 538.08 = 142.26 : x - Step 2: Convert to fraction form
358.74/538.08 = 142.26/x - Step 3: Cross multiply
358.74x = 538.08 × 142.26 - Step 4: Simplify right side
358.74x = 76,547.26 - Step 5: Solve for x
x = 76,547.26/358.74 - Step 6: Final answer
x = 213.38
Related Problems
Find fourth proportional to 179.37, 269.04 and 71.13
Half scale
Find fourth proportional to 717.48, 1,076.16 and 284.52
Double scale
Find fourth proportional to 359.74, 539.58 and 143.26
Similar ratio
Find fourth proportional to 538.11, 807.12 and 213.39
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.