Finding the Fourth Proportional to 163.36, 225.47 and 108.19
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Solution
The fourth proportional to 163.36, 225.47 and 108.19 is: 149.32
Step by Step Solution
- Step 1: Write the proportion equation
163.36 : 225.47 = 108.19 : x - Step 2: Convert to fraction form
163.36/225.47 = 108.19/x - Step 3: Cross multiply
163.36x = 225.47 × 108.19 - Step 4: Simplify right side
163.36x = 24,391.93 - Step 5: Solve for x
x = 24,391.93/163.36 - Step 6: Final answer
x = 149.32
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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.