Finding the Fourth Proportional to 252.91, 378.68 and 130.92
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Solution
The fourth proportional to 252.91, 378.68 and 130.92 is: 196.03
Step by Step Solution
- Step 1: Write the proportion equation
252.91 : 378.68 = 130.92 : x - Step 2: Convert to fraction form
252.91/378.68 = 130.92/x - Step 3: Cross multiply
252.91x = 378.68 × 130.92 - Step 4: Simplify right side
252.91x = 49,576.79 - Step 5: Solve for x
x = 49,576.79/252.91 - Step 6: Final answer
x = 196.03
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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.