Finding the Fourth Proportional to 163.97, 246.90 and 136.79
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Solution
The fourth proportional to 163.97, 246.90 and 136.79 is: 205.97
Step by Step Solution
- Step 1: Write the proportion equation
163.97 : 246.90 = 136.79 : x - Step 2: Convert to fraction form
163.97/246.90 = 136.79/x - Step 3: Cross multiply
163.97x = 246.90 × 136.79 - Step 4: Simplify right side
163.97x = 33,772.22 - Step 5: Solve for x
x = 33,772.22/163.97 - Step 6: Final answer
x = 205.97
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.