Finding the Fourth Proportional to 349.11, 481.77 and 201.78
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Solution
The fourth proportional to 349.11, 481.77 and 201.78 is: 278.46
Step by Step Solution
- Step 1: Write the proportion equation
349.11 : 481.77 = 201.78 : x - Step 2: Convert to fraction form
349.11/481.77 = 201.78/x - Step 3: Cross multiply
349.11x = 481.77 × 201.78 - Step 4: Simplify right side
349.11x = 97,211.55 - Step 5: Solve for x
x = 97,211.55/349.11 - Step 6: Final answer
x = 278.46
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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.