Finding the Third Proportional to 225 and 561
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Solution
The third proportional to 225 and 561 is: 1,398.76
Step by Step Solution
- Step 1: Write the proportion equation
225 : 561 = 561 : x - Step 2: Convert to fraction form
225/561 = 561/x - Step 3: Cross multiply
225x = 561 × 561 - Step 4: Simplify right side
225x = 314,721 - Step 5: Solve for x
x = 314,721/225 - Step 6: Final answer
x = 1,398.76
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Why These Related Problems?
These problems maintain the same ratio (2.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.