Finding the Fourth Proportional to 239.20, 330.08 and 161.44
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Solution
The fourth proportional to 239.20, 330.08 and 161.44 is: 222.78
Step by Step Solution
- Step 1: Write the proportion equation
239.20 : 330.08 = 161.44 : x - Step 2: Convert to fraction form
239.20/330.08 = 161.44/x - Step 3: Cross multiply
239.20x = 330.08 × 161.44 - Step 4: Simplify right side
239.20x = 53,288.12 - Step 5: Solve for x
x = 53,288.12/239.20 - Step 6: Final answer
x = 222.78
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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.