Finding the Fourth Proportional to 378.97, 522.97 and 210.92
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Solution
The fourth proportional to 378.97, 522.97 and 210.92 is: 291.06
Step by Step Solution
- Step 1: Write the proportion equation
378.97 : 522.97 = 210.92 : x - Step 2: Convert to fraction form
378.97/522.97 = 210.92/x - Step 3: Cross multiply
378.97x = 522.97 × 210.92 - Step 4: Simplify right side
378.97x = 110,302.22 - Step 5: Solve for x
x = 110,302.22/378.97 - Step 6: Final answer
x = 291.06
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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.