Finding the Fourth Proportional to 163.22, 243.23 and 157.41
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Solution
The fourth proportional to 163.22, 243.23 and 157.41 is: 234.57
Step by Step Solution
- Step 1: Write the proportion equation
163.22 : 243.23 = 157.41 : x - Step 2: Convert to fraction form
163.22/243.23 = 157.41/x - Step 3: Cross multiply
163.22x = 243.23 × 157.41 - Step 4: Simplify right side
163.22x = 38,286.05 - Step 5: Solve for x
x = 38,286.05/163.22 - Step 6: Final answer
x = 234.57
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.