Finding the Third Proportional to 386 and 490
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Solution
The third proportional to 386 and 490 is: 622.02
Step by Step Solution
- Step 1: Write the proportion equation
386 : 490 = 490 : x - Step 2: Convert to fraction form
386/490 = 490/x - Step 3: Cross multiply
386x = 490 × 490 - Step 4: Simplify right side
386x = 240,100 - Step 5: Solve for x
x = 240,100/386 - Step 6: Final answer
x = 622.02
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These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.