Finding the Fourth Proportional to 197.62, 272.68 and 122.92
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Solution
The fourth proportional to 197.62, 272.68 and 122.92 is: 169.61
Step by Step Solution
- Step 1: Write the proportion equation
197.62 : 272.68 = 122.92 : x - Step 2: Convert to fraction form
197.62/272.68 = 122.92/x - Step 3: Cross multiply
197.62x = 272.68 × 122.92 - Step 4: Simplify right side
197.62x = 33,517.83 - Step 5: Solve for x
x = 33,517.83/197.62 - Step 6: Final answer
x = 169.61
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.