Finding the Fourth Proportional to 239.14, 329.99 and 140.90
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Solution
The fourth proportional to 239.14, 329.99 and 140.90 is: 194.42
Step by Step Solution
- Step 1: Write the proportion equation
239.14 : 329.99 = 140.90 : x - Step 2: Convert to fraction form
239.14/329.99 = 140.90/x - Step 3: Cross multiply
239.14x = 329.99 × 140.90 - Step 4: Simplify right side
239.14x = 46,493.24 - Step 5: Solve for x
x = 46,493.24/239.14 - Step 6: Final answer
x = 194.42
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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.