Finding the Fourth Proportional to 235.38, 353.09 and 113.75
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Solution
The fourth proportional to 235.38, 353.09 and 113.75 is: 170.63
Step by Step Solution
- Step 1: Write the proportion equation
235.38 : 353.09 = 113.75 : x - Step 2: Convert to fraction form
235.38/353.09 = 113.75/x - Step 3: Cross multiply
235.38x = 353.09 × 113.75 - Step 4: Simplify right side
235.38x = 40,163.99 - Step 5: Solve for x
x = 40,163.99/235.38 - Step 6: Final answer
x = 170.63
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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.