Finding the Fourth Proportional to 163.74, 225.97 and 93.81
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Solution
The fourth proportional to 163.74, 225.97 and 93.81 is: 129.46
Step by Step Solution
- Step 1: Write the proportion equation
163.74 : 225.97 = 93.81 : x - Step 2: Convert to fraction form
163.74/225.97 = 93.81/x - Step 3: Cross multiply
163.74x = 225.97 × 93.81 - Step 4: Simplify right side
163.74x = 21,198.58 - Step 5: Solve for x
x = 21,198.58/163.74 - Step 6: Final answer
x = 129.46
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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.