Finding the Fourth Proportional to 163.09, 243.99 and 126.24
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Solution
The fourth proportional to 163.09, 243.99 and 126.24 is: 188.86
Step by Step Solution
- Step 1: Write the proportion equation
163.09 : 243.99 = 126.24 : x - Step 2: Convert to fraction form
163.09/243.99 = 126.24/x - Step 3: Cross multiply
163.09x = 243.99 × 126.24 - Step 4: Simplify right side
163.09x = 30,801.30 - Step 5: Solve for x
x = 30,801.30/163.09 - Step 6: Final answer
x = 188.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.