Finding the Third Proportional to 315 and 525
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Solution
The third proportional to 315 and 525 is: 875
Step by Step Solution
- Step 1: Write the proportion equation
315 : 525 = 525 : x - Step 2: Convert to fraction form
315/525 = 525/x - Step 3: Cross multiply
315x = 525 × 525 - Step 4: Simplify right side
315x = 275,625 - Step 5: Solve for x
x = 275,625/315 - Step 6: Final answer
x = 875
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Why These Related Problems?
These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.