Finding the Third Proportional to 17.25 and 42
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Solution
The third proportional to 17.25 and 42 is: 102.26
Step by Step Solution
- Step 1: Write the proportion equation
17.25 : 42 = 42 : x - Step 2: Convert to fraction form
17.25/42 = 42/x - Step 3: Cross multiply
17.25x = 42 × 42 - Step 4: Simplify right side
17.25x = 1,764 - Step 5: Solve for x
x = 1,764/17.25 - Step 6: Final answer
x = 102.26
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Why These Related Problems?
These problems maintain the same ratio (2.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.