Finding the Fourth Proportional to 396.76, 550.07 and 374.92
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Solution
The fourth proportional to 396.76, 550.07 and 374.92 is: 519.79
Step by Step Solution
- Step 1: Write the proportion equation
396.76 : 550.07 = 374.92 : x - Step 2: Convert to fraction form
396.76/550.07 = 374.92/x - Step 3: Cross multiply
396.76x = 550.07 × 374.92 - Step 4: Simplify right side
396.76x = 206,232.24 - Step 5: Solve for x
x = 206,232.24/396.76 - Step 6: Final answer
x = 519.79
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.