Finding the Fourth Proportional to 163.84, 246.79 and 138.73
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Solution
The fourth proportional to 163.84, 246.79 and 138.73 is: 208.97
Step by Step Solution
- Step 1: Write the proportion equation
163.84 : 246.79 = 138.73 : x - Step 2: Convert to fraction form
163.84/246.79 = 138.73/x - Step 3: Cross multiply
163.84x = 246.79 × 138.73 - Step 4: Simplify right side
163.84x = 34,237.18 - Step 5: Solve for x
x = 34,237.18/163.84 - Step 6: Final answer
x = 208.97
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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.