Finding the Fourth Proportional to 239.81, 360.11 and 220.82
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Solution
The fourth proportional to 239.81, 360.11 and 220.82 is: 331.60
Step by Step Solution
- Step 1: Write the proportion equation
239.81 : 360.11 = 220.82 : x - Step 2: Convert to fraction form
239.81/360.11 = 220.82/x - Step 3: Cross multiply
239.81x = 360.11 × 220.82 - Step 4: Simplify right side
239.81x = 79,518.24 - Step 5: Solve for x
x = 79,518.24/239.81 - Step 6: Final answer
x = 331.60
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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.