Finding the Fourth Proportional to 252.76, 378.97 and 129.44
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Solution
The fourth proportional to 252.76, 378.97 and 129.44 is: 194.07
Step by Step Solution
- Step 1: Write the proportion equation
252.76 : 378.97 = 129.44 : x - Step 2: Convert to fraction form
252.76/378.97 = 129.44/x - Step 3: Cross multiply
252.76x = 378.97 × 129.44 - Step 4: Simplify right side
252.76x = 49,051.66 - Step 5: Solve for x
x = 49,051.66/252.76 - Step 6: Final answer
x = 194.07
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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.