Finding the Third Proportional to 485 and 664.50
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Solution
The third proportional to 485 and 664.50 is: 910.43
Step by Step Solution
- Step 1: Write the proportion equation
485 : 664.50 = 664.50 : x - Step 2: Convert to fraction form
485/664.50 = 664.50/x - Step 3: Cross multiply
485x = 664.50 × 664.50 - Step 4: Simplify right side
485x = 441,560.25 - Step 5: Solve for x
x = 441,560.25/485 - Step 6: Final answer
x = 910.43
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.