Finding the Fourth Proportional to 163.97, 225.99 and 122.39
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Solution
The fourth proportional to 163.97, 225.99 and 122.39 is: 168.68
Step by Step Solution
- Step 1: Write the proportion equation
163.97 : 225.99 = 122.39 : x - Step 2: Convert to fraction form
163.97/225.99 = 122.39/x - Step 3: Cross multiply
163.97x = 225.99 × 122.39 - Step 4: Simplify right side
163.97x = 27,657.79 - Step 5: Solve for x
x = 27,657.79/163.97 - Step 6: Final answer
x = 168.68
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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.