Finding the Fourth Proportional to 207.91, 311.62 and 104.97
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Solution
The fourth proportional to 207.91, 311.62 and 104.97 is: 157.33
Step by Step Solution
- Step 1: Write the proportion equation
207.91 : 311.62 = 104.97 : x - Step 2: Convert to fraction form
207.91/311.62 = 104.97/x - Step 3: Cross multiply
207.91x = 311.62 × 104.97 - Step 4: Simplify right side
207.91x = 32,710.75 - Step 5: Solve for x
x = 32,710.75/207.91 - Step 6: Final answer
x = 157.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.