Finding the Fourth Proportional to 328.26, 491.96 and 274.26
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Solution
The fourth proportional to 328.26, 491.96 and 274.26 is: 411.03
Step by Step Solution
- Step 1: Write the proportion equation
328.26 : 491.96 = 274.26 : x - Step 2: Convert to fraction form
328.26/491.96 = 274.26/x - Step 3: Cross multiply
328.26x = 491.96 × 274.26 - Step 4: Simplify right side
328.26x = 134,924.95 - Step 5: Solve for x
x = 134,924.95/328.26 - Step 6: Final answer
x = 411.03
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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.