Finding the Third Proportional to 721 and 1,798
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Solution
The third proportional to 721 and 1,798 is: 4,483.78
Step by Step Solution
- Step 1: Write the proportion equation
721 : 1,798 = 1,798 : x - Step 2: Convert to fraction form
721/1,798 = 1,798/x - Step 3: Cross multiply
721x = 1,798 × 1,798 - Step 4: Simplify right side
721x = 3,232,804 - Step 5: Solve for x
x = 3,232,804/721 - Step 6: Final answer
x = 4,483.78
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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.