Finding the Third Proportional to 215 and 221
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Solution
The third proportional to 215 and 221 is: 227.17
Step by Step Solution
- Step 1: Write the proportion equation
215 : 221 = 221 : x - Step 2: Convert to fraction form
215/221 = 221/x - Step 3: Cross multiply
215x = 221 × 221 - Step 4: Simplify right side
215x = 48,841 - Step 5: Solve for x
x = 48,841/215 - Step 6: Final answer
x = 227.17
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These problems maintain the same ratio (1.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.