Finding the Fourth Proportional to 239.84, 331.08 and 161.36
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Solution
The fourth proportional to 239.84, 331.08 and 161.36 is: 222.74
Step by Step Solution
- Step 1: Write the proportion equation
239.84 : 331.08 = 161.36 : x - Step 2: Convert to fraction form
239.84/331.08 = 161.36/x - Step 3: Cross multiply
239.84x = 331.08 × 161.36 - Step 4: Simplify right side
239.84x = 53,423.07 - Step 5: Solve for x
x = 53,423.07/239.84 - Step 6: Final answer
x = 222.74
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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.