Finding the Third Proportional to 385 and 655
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Solution
The third proportional to 385 and 655 is: 1,114.35
Step by Step Solution
- Step 1: Write the proportion equation
385 : 655 = 655 : x - Step 2: Convert to fraction form
385/655 = 655/x - Step 3: Cross multiply
385x = 655 × 655 - Step 4: Simplify right side
385x = 429,025 - Step 5: Solve for x
x = 429,025/385 - Step 6: Final answer
x = 1,114.35
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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.