Finding the Third Proportional to 378 and 516
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Solution
The third proportional to 378 and 516 is: 704.38
Step by Step Solution
- Step 1: Write the proportion equation
378 : 516 = 516 : x - Step 2: Convert to fraction form
378/516 = 516/x - Step 3: Cross multiply
378x = 516 × 516 - Step 4: Simplify right side
378x = 266,256 - Step 5: Solve for x
x = 266,256/378 - Step 6: Final answer
x = 704.38
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.