Finding the Fourth Proportional to 239.93, 331.05 and 141.70
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Solution
The fourth proportional to 239.93, 331.05 and 141.70 is: 195.52
Step by Step Solution
- Step 1: Write the proportion equation
239.93 : 331.05 = 141.70 : x - Step 2: Convert to fraction form
239.93/331.05 = 141.70/x - Step 3: Cross multiply
239.93x = 331.05 × 141.70 - Step 4: Simplify right side
239.93x = 46,908.96 - Step 5: Solve for x
x = 46,908.96/239.93 - Step 6: Final answer
x = 195.52
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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.