Finding the Third Proportional to 121 and 308
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Solution
The third proportional to 121 and 308 is: 784
Step by Step Solution
- Step 1: Write the proportion equation
121 : 308 = 308 : x - Step 2: Convert to fraction form
121/308 = 308/x - Step 3: Cross multiply
121x = 308 × 308 - Step 4: Simplify right side
121x = 94,864 - Step 5: Solve for x
x = 94,864/121 - Step 6: Final answer
x = 784
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These problems maintain the same ratio (2.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.