Finding the Third Proportional to 648.75 and 1,408.50
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Solution
The third proportional to 648.75 and 1,408.50 is: 3,057.99
Step by Step Solution
- Step 1: Write the proportion equation
648.75 : 1,408.50 = 1,408.50 : x - Step 2: Convert to fraction form
648.75/1,408.50 = 1,408.50/x - Step 3: Cross multiply
648.75x = 1,408.50 × 1,408.50 - Step 4: Simplify right side
648.75x = 1,983,872.25 - Step 5: Solve for x
x = 1,983,872.25/648.75 - Step 6: Final answer
x = 3,057.99
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Why These Related Problems?
These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.