Finding the Fourth Proportional to 418.19, 628.49 and 201.92
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Solution
The fourth proportional to 418.19, 628.49 and 201.92 is: 303.46
Step by Step Solution
- Step 1: Write the proportion equation
418.19 : 628.49 = 201.92 : x - Step 2: Convert to fraction form
418.19/628.49 = 201.92/x - Step 3: Cross multiply
418.19x = 628.49 × 201.92 - Step 4: Simplify right side
418.19x = 126,902.06 - Step 5: Solve for x
x = 126,902.06/418.19 - Step 6: Final answer
x = 303.46
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.