Finding the Fourth Proportional to 378.65, 522.36 and 260.44
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Solution
The fourth proportional to 378.65, 522.36 and 260.44 is: 359.28
Step by Step Solution
- Step 1: Write the proportion equation
378.65 : 522.36 = 260.44 : x - Step 2: Convert to fraction form
378.65/522.36 = 260.44/x - Step 3: Cross multiply
378.65x = 522.36 × 260.44 - Step 4: Simplify right side
378.65x = 136,042.13 - Step 5: Solve for x
x = 136,042.13/378.65 - Step 6: Final answer
x = 359.28
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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.