Finding the Fourth Proportional to 252.08, 378.08 and 107.80
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Solution
The fourth proportional to 252.08, 378.08 and 107.80 is: 161.68
Step by Step Solution
- Step 1: Write the proportion equation
252.08 : 378.08 = 107.80 : x - Step 2: Convert to fraction form
252.08/378.08 = 107.80/x - Step 3: Cross multiply
252.08x = 378.08 × 107.80 - Step 4: Simplify right side
252.08x = 40,757.02 - Step 5: Solve for x
x = 40,757.02/252.08 - Step 6: Final answer
x = 161.68
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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.