Finding the Fourth Proportional to 221.44, 331.96 and 163.68
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Solution
The fourth proportional to 221.44, 331.96 and 163.68 is: 245.37
Step by Step Solution
- Step 1: Write the proportion equation
221.44 : 331.96 = 163.68 : x - Step 2: Convert to fraction form
221.44/331.96 = 163.68/x - Step 3: Cross multiply
221.44x = 331.96 × 163.68 - Step 4: Simplify right side
221.44x = 54,335.21 - Step 5: Solve for x
x = 54,335.21/221.44 - Step 6: Final answer
x = 245.37
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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.