Finding the Fourth Proportional to 239.76, 331.12 and 213.99
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Solution
The fourth proportional to 239.76, 331.12 and 213.99 is: 295.53
Step by Step Solution
- Step 1: Write the proportion equation
239.76 : 331.12 = 213.99 : x - Step 2: Convert to fraction form
239.76/331.12 = 213.99/x - Step 3: Cross multiply
239.76x = 331.12 × 213.99 - Step 4: Simplify right side
239.76x = 70,855.83 - Step 5: Solve for x
x = 70,855.83/239.76 - Step 6: Final answer
x = 295.53
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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.