Finding the Third Proportional to 339 and 399.50
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Solution
The third proportional to 339 and 399.50 is: 470.80
Step by Step Solution
- Step 1: Write the proportion equation
339 : 399.50 = 399.50 : x - Step 2: Convert to fraction form
339/399.50 = 399.50/x - Step 3: Cross multiply
339x = 399.50 × 399.50 - Step 4: Simplify right side
339x = 159,600.25 - Step 5: Solve for x
x = 159,600.25/339 - Step 6: Final answer
x = 470.80
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These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.