Finding the Fourth Proportional to 243.97, 365.96 and 81.68
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Solution
The fourth proportional to 243.97, 365.96 and 81.68 is: 122.52
Step by Step Solution
- Step 1: Write the proportion equation
243.97 : 365.96 = 81.68 : x - Step 2: Convert to fraction form
243.97/365.96 = 81.68/x - Step 3: Cross multiply
243.97x = 365.96 × 81.68 - Step 4: Simplify right side
243.97x = 29,889.99 - Step 5: Solve for x
x = 29,889.99/243.97 - Step 6: Final answer
x = 122.52
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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.