Finding the Fourth Proportional to 252.62, 378.89 and 69.99
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Solution
The fourth proportional to 252.62, 378.89 and 69.99 is: 104.97
Step by Step Solution
- Step 1: Write the proportion equation
252.62 : 378.89 = 69.99 : x - Step 2: Convert to fraction form
252.62/378.89 = 69.99/x - Step 3: Cross multiply
252.62x = 378.89 × 69.99 - Step 4: Simplify right side
252.62x = 26,518.16 - Step 5: Solve for x
x = 26,518.16/252.62 - Step 6: Final answer
x = 104.97
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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.