Finding the Fourth Proportional to 263.26, 394.97 and 80.67
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Solution
The fourth proportional to 263.26, 394.97 and 80.67 is: 121.03
Step by Step Solution
- Step 1: Write the proportion equation
263.26 : 394.97 = 80.67 : x - Step 2: Convert to fraction form
263.26/394.97 = 80.67/x - Step 3: Cross multiply
263.26x = 394.97 × 80.67 - Step 4: Simplify right side
263.26x = 31,862.42 - Step 5: Solve for x
x = 31,862.42/263.26 - Step 6: Final answer
x = 121.03
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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.