Finding the Fourth Proportional to 207.58, 311.43 and 126.94
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Solution
The fourth proportional to 207.58, 311.43 and 126.94 is: 190.45
Step by Step Solution
- Step 1: Write the proportion equation
207.58 : 311.43 = 126.94 : x - Step 2: Convert to fraction form
207.58/311.43 = 126.94/x - Step 3: Cross multiply
207.58x = 311.43 × 126.94 - Step 4: Simplify right side
207.58x = 39,532.92 - Step 5: Solve for x
x = 39,532.92/207.58 - Step 6: Final answer
x = 190.45
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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.