Finding the Third Proportional to 121 and 201.75
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Solution
The third proportional to 121 and 201.75 is: 336.39
Step by Step Solution
- Step 1: Write the proportion equation
121 : 201.75 = 201.75 : x - Step 2: Convert to fraction form
121/201.75 = 201.75/x - Step 3: Cross multiply
121x = 201.75 × 201.75 - Step 4: Simplify right side
121x = 40,703.06 - Step 5: Solve for x
x = 40,703.06/121 - Step 6: Final answer
x = 336.39
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Why These Related Problems?
These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.