Finding the Third Proportional to 395 and 670.50
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Solution
The third proportional to 395 and 670.50 is: 1,138.15
Step by Step Solution
- Step 1: Write the proportion equation
395 : 670.50 = 670.50 : x - Step 2: Convert to fraction form
395/670.50 = 670.50/x - Step 3: Cross multiply
395x = 670.50 × 670.50 - Step 4: Simplify right side
395x = 449,570.25 - Step 5: Solve for x
x = 449,570.25/395 - Step 6: Final answer
x = 1,138.15
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Why These Related Problems?
These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.