Finding the Fourth Proportional to 236.87, 326.91 and 138.68
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Solution
The fourth proportional to 236.87, 326.91 and 138.68 is: 191.39
Step by Step Solution
- Step 1: Write the proportion equation
236.87 : 326.91 = 138.68 : x - Step 2: Convert to fraction form
236.87/326.91 = 138.68/x - Step 3: Cross multiply
236.87x = 326.91 × 138.68 - Step 4: Simplify right side
236.87x = 45,334.24 - Step 5: Solve for x
x = 45,334.24/236.87 - Step 6: Final answer
x = 191.39
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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.