Finding the Third Proportional to 389 and 745
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Solution
The third proportional to 389 and 745 is: 1,426.80
Step by Step Solution
- Step 1: Write the proportion equation
389 : 745 = 745 : x - Step 2: Convert to fraction form
389/745 = 745/x - Step 3: Cross multiply
389x = 745 × 745 - Step 4: Simplify right side
389x = 555,025 - Step 5: Solve for x
x = 555,025/389 - Step 6: Final answer
x = 1,426.80
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Why These Related Problems?
These problems maintain the same ratio (1.92) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.