Finding the Fourth Proportional to 328.63, 492.68 and 163.99
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Solution
The fourth proportional to 328.63, 492.68 and 163.99 is: 245.85
Step by Step Solution
- Step 1: Write the proportion equation
328.63 : 492.68 = 163.99 : x - Step 2: Convert to fraction form
328.63/492.68 = 163.99/x - Step 3: Cross multiply
328.63x = 492.68 × 163.99 - Step 4: Simplify right side
328.63x = 80,792.13 - Step 5: Solve for x
x = 80,792.13/328.63 - Step 6: Final answer
x = 245.85
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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.