Finding the Third Proportional to 221 and 425.50
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Solution
The third proportional to 221 and 425.50 is: 819.23
Step by Step Solution
- Step 1: Write the proportion equation
221 : 425.50 = 425.50 : x - Step 2: Convert to fraction form
221/425.50 = 425.50/x - Step 3: Cross multiply
221x = 425.50 × 425.50 - Step 4: Simplify right side
221x = 181,050.25 - Step 5: Solve for x
x = 181,050.25/221 - Step 6: Final answer
x = 819.23
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Why These Related Problems?
These problems maintain the same ratio (1.93) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.