Finding the Third Proportional to 641 and 1,728.50
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Solution
The third proportional to 641 and 1,728.50 is: 4,661.02
Step by Step Solution
- Step 1: Write the proportion equation
641 : 1,728.50 = 1,728.50 : x - Step 2: Convert to fraction form
641/1,728.50 = 1,728.50/x - Step 3: Cross multiply
641x = 1,728.50 × 1,728.50 - Step 4: Simplify right side
641x = 2,987,712.25 - Step 5: Solve for x
x = 2,987,712.25/641 - Step 6: Final answer
x = 4,661.02
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Why These Related Problems?
These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.