Finding the Third Proportional to 305 and 621.50
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Solution
The third proportional to 305 and 621.50 is: 1,266.43
Step by Step Solution
- Step 1: Write the proportion equation
305 : 621.50 = 621.50 : x - Step 2: Convert to fraction form
305/621.50 = 621.50/x - Step 3: Cross multiply
305x = 621.50 × 621.50 - Step 4: Simplify right side
305x = 386,262.25 - Step 5: Solve for x
x = 386,262.25/305 - Step 6: Final answer
x = 1,266.43
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Why These Related Problems?
These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.