Finding the Fourth Proportional to 252.26, 378.38 and 69.68
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Solution
The fourth proportional to 252.26, 378.38 and 69.68 is: 104.51
Step by Step Solution
- Step 1: Write the proportion equation
252.26 : 378.38 = 69.68 : x - Step 2: Convert to fraction form
252.26/378.38 = 69.68/x - Step 3: Cross multiply
252.26x = 378.38 × 69.68 - Step 4: Simplify right side
252.26x = 26,363.63 - Step 5: Solve for x
x = 26,363.63/252.26 - Step 6: Final answer
x = 104.51
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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.