Finding the Fourth Proportional to 198.01, 273.19 and 115.08
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Solution
The fourth proportional to 198.01, 273.19 and 115.08 is: 158.77
Step by Step Solution
- Step 1: Write the proportion equation
198.01 : 273.19 = 115.08 : x - Step 2: Convert to fraction form
198.01/273.19 = 115.08/x - Step 3: Cross multiply
198.01x = 273.19 × 115.08 - Step 4: Simplify right side
198.01x = 31,438.13 - Step 5: Solve for x
x = 31,438.13/198.01 - Step 6: Final answer
x = 158.77
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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.