Finding the Third Proportional to 385 and 613.50
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Solution
The third proportional to 385 and 613.50 is: 977.62
Step by Step Solution
- Step 1: Write the proportion equation
385 : 613.50 = 613.50 : x - Step 2: Convert to fraction form
385/613.50 = 613.50/x - Step 3: Cross multiply
385x = 613.50 × 613.50 - Step 4: Simplify right side
385x = 376,382.25 - Step 5: Solve for x
x = 376,382.25/385 - Step 6: Final answer
x = 977.62
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Why These Related Problems?
These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.