Finding the Third Proportional to 209 and 515
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Solution
The third proportional to 209 and 515 is: 1,269.02
Step by Step Solution
- Step 1: Write the proportion equation
209 : 515 = 515 : x - Step 2: Convert to fraction form
209/515 = 515/x - Step 3: Cross multiply
209x = 515 × 515 - Step 4: Simplify right side
209x = 265,225 - Step 5: Solve for x
x = 265,225/209 - Step 6: Final answer
x = 1,269.02
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Why These Related Problems?
These problems maintain the same ratio (2.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.