Finding the Fourth Proportional to 321.26, 481.43 and 147.98
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Solution
The fourth proportional to 321.26, 481.43 and 147.98 is: 221.75
Step by Step Solution
- Step 1: Write the proportion equation
321.26 : 481.43 = 147.98 : x - Step 2: Convert to fraction form
321.26/481.43 = 147.98/x - Step 3: Cross multiply
321.26x = 481.43 × 147.98 - Step 4: Simplify right side
321.26x = 71,238.86 - Step 5: Solve for x
x = 71,238.86/321.26 - Step 6: Final answer
x = 221.75
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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.