Finding the Fourth Proportional to 207.71, 311.44 and 84.26
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Solution
The fourth proportional to 207.71, 311.44 and 84.26 is: 126.33
Step by Step Solution
- Step 1: Write the proportion equation
207.71 : 311.44 = 84.26 : x - Step 2: Convert to fraction form
207.71/311.44 = 84.26/x - Step 3: Cross multiply
207.71x = 311.44 × 84.26 - Step 4: Simplify right side
207.71x = 26,239.96 - Step 5: Solve for x
x = 26,239.96/207.71 - Step 6: Final answer
x = 126.33
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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.