Finding the Third Proportional to 397.50 and 666
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Solution
The third proportional to 397.50 and 666 is: 1,115.86
Step by Step Solution
- Step 1: Write the proportion equation
397.50 : 666 = 666 : x - Step 2: Convert to fraction form
397.50/666 = 666/x - Step 3: Cross multiply
397.50x = 666 × 666 - Step 4: Simplify right side
397.50x = 443,556 - Step 5: Solve for x
x = 443,556/397.50 - Step 6: Final answer
x = 1,115.86
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These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.