Finding the Fourth Proportional to 216.75, 324.84 and 112.68
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Solution
The fourth proportional to 216.75, 324.84 and 112.68 is: 168.87
Step by Step Solution
- Step 1: Write the proportion equation
216.75 : 324.84 = 112.68 : x - Step 2: Convert to fraction form
216.75/324.84 = 112.68/x - Step 3: Cross multiply
216.75x = 324.84 × 112.68 - Step 4: Simplify right side
216.75x = 36,602.97 - Step 5: Solve for x
x = 36,602.97/216.75 - Step 6: Final answer
x = 168.87
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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.