Finding the Fourth Proportional to 239.70, 331.12 and 210.13
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Solution
The fourth proportional to 239.70, 331.12 and 210.13 is: 290.27
Step by Step Solution
- Step 1: Write the proportion equation
239.70 : 331.12 = 210.13 : x - Step 2: Convert to fraction form
239.70/331.12 = 210.13/x - Step 3: Cross multiply
239.70x = 331.12 × 210.13 - Step 4: Simplify right side
239.70x = 69,578.25 - Step 5: Solve for x
x = 69,578.25/239.70 - Step 6: Final answer
x = 290.27
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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.