Finding the Fourth Proportional to 252.19, 378.26 and 130.55
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Solution
The fourth proportional to 252.19, 378.26 and 130.55 is: 195.81
Step by Step Solution
- Step 1: Write the proportion equation
252.19 : 378.26 = 130.55 : x - Step 2: Convert to fraction form
252.19/378.26 = 130.55/x - Step 3: Cross multiply
252.19x = 378.26 × 130.55 - Step 4: Simplify right side
252.19x = 49,381.19 - Step 5: Solve for x
x = 49,381.19/252.19 - Step 6: Final answer
x = 195.81
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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.