Finding the Third Proportional to 128 and 336
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Solution
The third proportional to 128 and 336 is: 882
Step by Step Solution
- Step 1: Write the proportion equation
128 : 336 = 336 : x - Step 2: Convert to fraction form
128/336 = 336/x - Step 3: Cross multiply
128x = 336 × 336 - Step 4: Simplify right side
128x = 112,896 - Step 5: Solve for x
x = 112,896/128 - Step 6: Final answer
x = 882
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These problems maintain the same ratio (2.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.