Finding the Fourth Proportional to 252.26, 378.36 and 69.64
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Solution
The fourth proportional to 252.26, 378.36 and 69.64 is: 104.45
Step by Step Solution
- Step 1: Write the proportion equation
252.26 : 378.36 = 69.64 : x - Step 2: Convert to fraction form
252.26/378.36 = 69.64/x - Step 3: Cross multiply
252.26x = 378.36 × 69.64 - Step 4: Simplify right side
252.26x = 26,348.99 - Step 5: Solve for x
x = 26,348.99/252.26 - Step 6: Final answer
x = 104.45
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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.