Finding the Third Proportional to 85 and 136
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Solution
The third proportional to 85 and 136 is: 217.60
Step by Step Solution
- Step 1: Write the proportion equation
85 : 136 = 136 : x - Step 2: Convert to fraction form
85/136 = 136/x - Step 3: Cross multiply
85x = 136 × 136 - Step 4: Simplify right side
85x = 18,496 - Step 5: Solve for x
x = 18,496/85 - Step 6: Final answer
x = 217.60
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Why These Related Problems?
These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.