Finding the Fourth Proportional to 163.53, 243.81 and 157.41
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Solution
The fourth proportional to 163.53, 243.81 and 157.41 is: 234.69
Step by Step Solution
- Step 1: Write the proportion equation
163.53 : 243.81 = 157.41 : x - Step 2: Convert to fraction form
163.53/243.81 = 157.41/x - Step 3: Cross multiply
163.53x = 243.81 × 157.41 - Step 4: Simplify right side
163.53x = 38,378.13 - Step 5: Solve for x
x = 38,378.13/163.53 - Step 6: Final answer
x = 234.69
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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.