Finding the Fourth Proportional to 163.71, 225.99 and 122.33
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Solution
The fourth proportional to 163.71, 225.99 and 122.33 is: 168.87
Step by Step Solution
- Step 1: Write the proportion equation
163.71 : 225.99 = 122.33 : x - Step 2: Convert to fraction form
163.71/225.99 = 122.33/x - Step 3: Cross multiply
163.71x = 225.99 × 122.33 - Step 4: Simplify right side
163.71x = 27,645.92 - Step 5: Solve for x
x = 27,645.92/163.71 - Step 6: Final answer
x = 168.87
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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.