Finding the Third Proportional to 389.25 and 706.50
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Solution
The third proportional to 389.25 and 706.50 is: 1,282.32
Step by Step Solution
- Step 1: Write the proportion equation
389.25 : 706.50 = 706.50 : x - Step 2: Convert to fraction form
389.25/706.50 = 706.50/x - Step 3: Cross multiply
389.25x = 706.50 × 706.50 - Step 4: Simplify right side
389.25x = 499,142.25 - Step 5: Solve for x
x = 499,142.25/389.25 - Step 6: Final answer
x = 1,282.32
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Why These Related Problems?
These problems maintain the same ratio (1.82) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.