Finding the Third Proportional to 243.50 and 421
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Solution
The third proportional to 243.50 and 421 is: 727.89
Step by Step Solution
- Step 1: Write the proportion equation
243.50 : 421 = 421 : x - Step 2: Convert to fraction form
243.50/421 = 421/x - Step 3: Cross multiply
243.50x = 421 × 421 - Step 4: Simplify right side
243.50x = 177,241 - Step 5: Solve for x
x = 177,241/243.50 - Step 6: Final answer
x = 727.89
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Why These Related Problems?
These problems maintain the same ratio (1.73) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.