Finding the Third Proportional to 128 and 347
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Solution
The third proportional to 128 and 347 is: 940.70
Step by Step Solution
- Step 1: Write the proportion equation
128 : 347 = 347 : x - Step 2: Convert to fraction form
128/347 = 347/x - Step 3: Cross multiply
128x = 347 × 347 - Step 4: Simplify right side
128x = 120,409 - Step 5: Solve for x
x = 120,409/128 - Step 6: Final answer
x = 940.70
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Why These Related Problems?
These problems maintain the same ratio (2.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.