Finding the Fourth Proportional to 197.27, 272.19 and 122.58
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Solution
The fourth proportional to 197.27, 272.19 and 122.58 is: 169.14
Step by Step Solution
- Step 1: Write the proportion equation
197.27 : 272.19 = 122.58 : x - Step 2: Convert to fraction form
197.27/272.19 = 122.58/x - Step 3: Cross multiply
197.27x = 272.19 × 122.58 - Step 4: Simplify right side
197.27x = 33,365.05 - Step 5: Solve for x
x = 33,365.05/197.27 - Step 6: Final answer
x = 169.14
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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.