Finding the Fourth Proportional to 163.98, 244.62 and 138.42
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Solution
The fourth proportional to 163.98, 244.62 and 138.42 is: 206.49
Step by Step Solution
- Step 1: Write the proportion equation
163.98 : 244.62 = 138.42 : x - Step 2: Convert to fraction form
163.98/244.62 = 138.42/x - Step 3: Cross multiply
163.98x = 244.62 × 138.42 - Step 4: Simplify right side
163.98x = 33,860.30 - Step 5: Solve for x
x = 33,860.30/163.98 - Step 6: Final answer
x = 206.49
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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.