Finding the Fourth Proportional to 328.71, 493.00 and 109.31
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Solution
The fourth proportional to 328.71, 493.00 and 109.31 is: 163.95
Step by Step Solution
- Step 1: Write the proportion equation
328.71 : 493.00 = 109.31 : x - Step 2: Convert to fraction form
328.71/493.00 = 109.31/x - Step 3: Cross multiply
328.71x = 493.00 × 109.31 - Step 4: Simplify right side
328.71x = 53,891.04 - Step 5: Solve for x
x = 53,891.04/328.71 - Step 6: Final answer
x = 163.95
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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.