Finding the Fourth Proportional to 221.36, 331.88 and 113.08
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Solution
The fourth proportional to 221.36, 331.88 and 113.08 is: 169.54
Step by Step Solution
- Step 1: Write the proportion equation
221.36 : 331.88 = 113.08 : x - Step 2: Convert to fraction form
221.36/331.88 = 113.08/x - Step 3: Cross multiply
221.36x = 331.88 × 113.08 - Step 4: Simplify right side
221.36x = 37,528.99 - Step 5: Solve for x
x = 37,528.99/221.36 - Step 6: Final answer
x = 169.54
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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.