Finding the Fourth Proportional to 197.99, 273.19 and 115.08
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Solution
The fourth proportional to 197.99, 273.19 and 115.08 is: 158.79
Step by Step Solution
- Step 1: Write the proportion equation
197.99 : 273.19 = 115.08 : x - Step 2: Convert to fraction form
197.99/273.19 = 115.08/x - Step 3: Cross multiply
197.99x = 273.19 × 115.08 - Step 4: Simplify right side
197.99x = 31,438.71 - Step 5: Solve for x
x = 31,438.71/197.99 - Step 6: Final answer
x = 158.79
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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.