Finding the Fourth Proportional to 163.26, 243.74 and 162.12
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Solution
The fourth proportional to 163.26, 243.74 and 162.12 is: 242.04
Step by Step Solution
- Step 1: Write the proportion equation
163.26 : 243.74 = 162.12 : x - Step 2: Convert to fraction form
163.26/243.74 = 162.12/x - Step 3: Cross multiply
163.26x = 243.74 × 162.12 - Step 4: Simplify right side
163.26x = 39,515.13 - Step 5: Solve for x
x = 39,515.13/163.26 - Step 6: Final answer
x = 242.04
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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.