Finding the Fourth Proportional to 163.20, 243.62 and 143.62
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Solution
The fourth proportional to 163.20, 243.62 and 143.62 is: 214.39
Step by Step Solution
- Step 1: Write the proportion equation
163.20 : 243.62 = 143.62 : x - Step 2: Convert to fraction form
163.20/243.62 = 143.62/x - Step 3: Cross multiply
163.20x = 243.62 × 143.62 - Step 4: Simplify right side
163.20x = 34,988.70 - Step 5: Solve for x
x = 34,988.70/163.20 - Step 6: Final answer
x = 214.39
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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.