Finding the Fourth Proportional to 163.92, 226.08 and 139.44
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Solution
The fourth proportional to 163.92, 226.08 and 139.44 is: 192.32
Step by Step Solution
- Step 1: Write the proportion equation
163.92 : 226.08 = 139.44 : x - Step 2: Convert to fraction form
163.92/226.08 = 139.44/x - Step 3: Cross multiply
163.92x = 226.08 × 139.44 - Step 4: Simplify right side
163.92x = 31,524.60 - Step 5: Solve for x
x = 31,524.60/163.92 - Step 6: Final answer
x = 192.32
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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.