Finding the Fourth Proportional to 207.29, 310.97 and 115.90
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Solution
The fourth proportional to 207.29, 310.97 and 115.90 is: 173.87
Step by Step Solution
- Step 1: Write the proportion equation
207.29 : 310.97 = 115.90 : x - Step 2: Convert to fraction form
207.29/310.97 = 115.90/x - Step 3: Cross multiply
207.29x = 310.97 × 115.90 - Step 4: Simplify right side
207.29x = 36,040.94 - Step 5: Solve for x
x = 36,040.94/207.29 - Step 6: Final answer
x = 173.87
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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.