Finding the Third Proportional to 280 and 388
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Solution
The third proportional to 280 and 388 is: 537.66
Step by Step Solution
- Step 1: Write the proportion equation
280 : 388 = 388 : x - Step 2: Convert to fraction form
280/388 = 388/x - Step 3: Cross multiply
280x = 388 × 388 - Step 4: Simplify right side
280x = 150,544 - Step 5: Solve for x
x = 150,544/280 - Step 6: Final answer
x = 537.66
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These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.