Finding the Third Proportional to 386 and 805
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Solution
The third proportional to 386 and 805 is: 1,678.82
Step by Step Solution
- Step 1: Write the proportion equation
386 : 805 = 805 : x - Step 2: Convert to fraction form
386/805 = 805/x - Step 3: Cross multiply
386x = 805 × 805 - Step 4: Simplify right side
386x = 648,025 - Step 5: Solve for x
x = 648,025/386 - Step 6: Final answer
x = 1,678.82
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Why These Related Problems?
These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.