Finding the Fourth Proportional to 163.91, 226.21 and 98.43
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Solution
The fourth proportional to 163.91, 226.21 and 98.43 is: 135.84
Step by Step Solution
- Step 1: Write the proportion equation
163.91 : 226.21 = 98.43 : x - Step 2: Convert to fraction form
163.91/226.21 = 98.43/x - Step 3: Cross multiply
163.91x = 226.21 × 98.43 - Step 4: Simplify right side
163.91x = 22,265.85 - Step 5: Solve for x
x = 22,265.85/163.91 - Step 6: Final answer
x = 135.84
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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.