Finding the Fourth Proportional to 252.20, 378.48 and 107.96
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Solution
The fourth proportional to 252.20, 378.48 and 107.96 is: 162.02
Step by Step Solution
- Step 1: Write the proportion equation
252.20 : 378.48 = 107.96 : x - Step 2: Convert to fraction form
252.20/378.48 = 107.96/x - Step 3: Cross multiply
252.20x = 378.48 × 107.96 - Step 4: Simplify right side
252.20x = 40,860.70 - Step 5: Solve for x
x = 40,860.70/252.20 - Step 6: Final answer
x = 162.02
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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.