Finding the Fourth Proportional to 198.11, 273.44 and 115.26
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Solution
The fourth proportional to 198.11, 273.44 and 115.26 is: 159.08
Step by Step Solution
- Step 1: Write the proportion equation
198.11 : 273.44 = 115.26 : x - Step 2: Convert to fraction form
198.11/273.44 = 115.26/x - Step 3: Cross multiply
198.11x = 273.44 × 115.26 - Step 4: Simplify right side
198.11x = 31,515.96 - Step 5: Solve for x
x = 31,515.96/198.11 - Step 6: Final answer
x = 159.08
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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.