Finding the Fourth Proportional to 213.75, 319.91 and 201.92
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Solution
The fourth proportional to 213.75, 319.91 and 201.92 is: 302.19
Step by Step Solution
- Step 1: Write the proportion equation
213.75 : 319.91 = 201.92 : x - Step 2: Convert to fraction form
213.75/319.91 = 201.92/x - Step 3: Cross multiply
213.75x = 319.91 × 201.92 - Step 4: Simplify right side
213.75x = 64,593.62 - Step 5: Solve for x
x = 64,593.62/213.75 - Step 6: Final answer
x = 302.19
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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.