Finding the Fourth Proportional to 252.79, 378.81 and 194.81
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Solution
The fourth proportional to 252.79, 378.81 and 194.81 is: 291.92
Step by Step Solution
- Step 1: Write the proportion equation
252.79 : 378.81 = 194.81 : x - Step 2: Convert to fraction form
252.79/378.81 = 194.81/x - Step 3: Cross multiply
252.79x = 378.81 × 194.81 - Step 4: Simplify right side
252.79x = 73,794.08 - Step 5: Solve for x
x = 73,794.08/252.79 - Step 6: Final answer
x = 291.92
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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.