Finding the Fourth Proportional to 252.25, 378.34 and 69.66
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Solution
The fourth proportional to 252.25, 378.34 and 69.66 is: 104.48
Step by Step Solution
- Step 1: Write the proportion equation
252.25 : 378.34 = 69.66 : x - Step 2: Convert to fraction form
252.25/378.34 = 69.66/x - Step 3: Cross multiply
252.25x = 378.34 × 69.66 - Step 4: Simplify right side
252.25x = 26,354.99 - Step 5: Solve for x
x = 26,354.99/252.25 - Step 6: Final answer
x = 104.48
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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.