Finding the Third Proportional to 815 and 1,658
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Solution
The third proportional to 815 and 1,658 is: 3,372.96
Step by Step Solution
- Step 1: Write the proportion equation
815 : 1,658 = 1,658 : x - Step 2: Convert to fraction form
815/1,658 = 1,658/x - Step 3: Cross multiply
815x = 1,658 × 1,658 - Step 4: Simplify right side
815x = 2,748,964 - Step 5: Solve for x
x = 2,748,964/815 - Step 6: Final answer
x = 3,372.96
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Why These Related Problems?
These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.