Finding the Third Proportional to 381 and 648.50
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Solution
The third proportional to 381 and 648.50 is: 1,103.81
Step by Step Solution
- Step 1: Write the proportion equation
381 : 648.50 = 648.50 : x - Step 2: Convert to fraction form
381/648.50 = 648.50/x - Step 3: Cross multiply
381x = 648.50 × 648.50 - Step 4: Simplify right side
381x = 420,552.25 - Step 5: Solve for x
x = 420,552.25/381 - Step 6: Final answer
x = 1,103.81
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These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.