Finding the Third Proportional to 396 and 518.50
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Solution
The third proportional to 396 and 518.50 is: 678.89
Step by Step Solution
- Step 1: Write the proportion equation
396 : 518.50 = 518.50 : x - Step 2: Convert to fraction form
396/518.50 = 518.50/x - Step 3: Cross multiply
396x = 518.50 × 518.50 - Step 4: Simplify right side
396x = 268,842.25 - Step 5: Solve for x
x = 268,842.25/396 - Step 6: Final answer
x = 678.89
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These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.