Finding the Fourth Proportional to 263.99, 395.84 and 81.33
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Solution
The fourth proportional to 263.99, 395.84 and 81.33 is: 121.95
Step by Step Solution
- Step 1: Write the proportion equation
263.99 : 395.84 = 81.33 : x - Step 2: Convert to fraction form
263.99/395.84 = 81.33/x - Step 3: Cross multiply
263.99x = 395.84 × 81.33 - Step 4: Simplify right side
263.99x = 32,193.26 - Step 5: Solve for x
x = 32,193.26/263.99 - Step 6: Final answer
x = 121.95
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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.