Finding the Fourth Proportional to 252.87, 378.99 and 131.10
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Solution
The fourth proportional to 252.87, 378.99 and 131.10 is: 196.49
Step by Step Solution
- Step 1: Write the proportion equation
252.87 : 378.99 = 131.10 : x - Step 2: Convert to fraction form
252.87/378.99 = 131.10/x - Step 3: Cross multiply
252.87x = 378.99 × 131.10 - Step 4: Simplify right side
252.87x = 49,685.59 - Step 5: Solve for x
x = 49,685.59/252.87 - Step 6: Final answer
x = 196.49
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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.