Finding the Fourth Proportional to 378.91, 523.19 and 246.19
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Solution
The fourth proportional to 378.91, 523.19 and 246.19 is: 339.94
Step by Step Solution
- Step 1: Write the proportion equation
378.91 : 523.19 = 246.19 : x - Step 2: Convert to fraction form
378.91/523.19 = 246.19/x - Step 3: Cross multiply
378.91x = 523.19 × 246.19 - Step 4: Simplify right side
378.91x = 128,805.91 - Step 5: Solve for x
x = 128,805.91/378.91 - Step 6: Final answer
x = 339.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.