Finding the Fourth Proportional to 418.67, 628.10 and 202.49
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Solution
The fourth proportional to 418.67, 628.10 and 202.49 is: 303.78
Step by Step Solution
- Step 1: Write the proportion equation
418.67 : 628.10 = 202.49 : x - Step 2: Convert to fraction form
418.67/628.10 = 202.49/x - Step 3: Cross multiply
418.67x = 628.10 × 202.49 - Step 4: Simplify right side
418.67x = 127,183.97 - Step 5: Solve for x
x = 127,183.97/418.67 - Step 6: Final answer
x = 303.78
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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.