Finding the Third Proportional to 339 and 415.50
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Solution
The third proportional to 339 and 415.50 is: 509.26
Step by Step Solution
- Step 1: Write the proportion equation
339 : 415.50 = 415.50 : x - Step 2: Convert to fraction form
339/415.50 = 415.50/x - Step 3: Cross multiply
339x = 415.50 × 415.50 - Step 4: Simplify right side
339x = 172,640.25 - Step 5: Solve for x
x = 172,640.25/339 - Step 6: Final answer
x = 509.26
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Why These Related Problems?
These problems maintain the same ratio (1.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.