Finding the Fourth Proportional to 239.97, 331.19 and 141.77
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Solution
The fourth proportional to 239.97, 331.19 and 141.77 is: 195.65
Step by Step Solution
- Step 1: Write the proportion equation
239.97 : 331.19 = 141.77 : x - Step 2: Convert to fraction form
239.97/331.19 = 141.77/x - Step 3: Cross multiply
239.97x = 331.19 × 141.77 - Step 4: Simplify right side
239.97x = 46,950.44 - Step 5: Solve for x
x = 46,950.44/239.97 - Step 6: Final answer
x = 195.65
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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.