Finding the Third Proportional to 485 and 911
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Solution
The third proportional to 485 and 911 is: 1,711.18
Step by Step Solution
- Step 1: Write the proportion equation
485 : 911 = 911 : x - Step 2: Convert to fraction form
485/911 = 911/x - Step 3: Cross multiply
485x = 911 × 911 - Step 4: Simplify right side
485x = 829,921 - Step 5: Solve for x
x = 829,921/485 - Step 6: Final answer
x = 1,711.18
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Why These Related Problems?
These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.