Finding the Third Proportional to 356 and 388
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Solution
The third proportional to 356 and 388 is: 422.88
Step by Step Solution
- Step 1: Write the proportion equation
356 : 388 = 388 : x - Step 2: Convert to fraction form
356/388 = 388/x - Step 3: Cross multiply
356x = 388 × 388 - Step 4: Simplify right side
356x = 150,544 - Step 5: Solve for x
x = 150,544/356 - Step 6: Final answer
x = 422.88
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These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.