Finding the Third Proportional to 253 and 311
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Solution
The third proportional to 253 and 311 is: 382.30
Step by Step Solution
- Step 1: Write the proportion equation
253 : 311 = 311 : x - Step 2: Convert to fraction form
253/311 = 311/x - Step 3: Cross multiply
253x = 311 × 311 - Step 4: Simplify right side
253x = 96,721 - Step 5: Solve for x
x = 96,721/253 - Step 6: Final answer
x = 382.30
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Why These Related Problems?
These problems maintain the same ratio (1.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.