Finding the Fourth Proportional to 326.18, 489.36 and 163.70
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Solution
The fourth proportional to 326.18, 489.36 and 163.70 is: 245.60
Step by Step Solution
- Step 1: Write the proportion equation
326.18 : 489.36 = 163.70 : x - Step 2: Convert to fraction form
326.18/489.36 = 163.70/x - Step 3: Cross multiply
326.18x = 489.36 × 163.70 - Step 4: Simplify right side
326.18x = 80,108.23 - Step 5: Solve for x
x = 80,108.23/326.18 - Step 6: Final answer
x = 245.60
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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.