Finding the Fourth Proportional to 197.81, 273.02 and 120.19
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Solution
The fourth proportional to 197.81, 273.02 and 120.19 is: 165.88
Step by Step Solution
- Step 1: Write the proportion equation
197.81 : 273.02 = 120.19 : x - Step 2: Convert to fraction form
197.81/273.02 = 120.19/x - Step 3: Cross multiply
197.81x = 273.02 × 120.19 - Step 4: Simplify right side
197.81x = 32,812.99 - Step 5: Solve for x
x = 32,812.99/197.81 - Step 6: Final answer
x = 165.88
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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.