Finding the Fourth Proportional to 378.81, 522.97 and 246.13
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Solution
The fourth proportional to 378.81, 522.97 and 246.13 is: 339.79
Step by Step Solution
- Step 1: Write the proportion equation
378.81 : 522.97 = 246.13 : x - Step 2: Convert to fraction form
378.81/522.97 = 246.13/x - Step 3: Cross multiply
378.81x = 522.97 × 246.13 - Step 4: Simplify right side
378.81x = 128,716.68 - Step 5: Solve for x
x = 128,716.68/378.81 - Step 6: Final answer
x = 339.79
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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.