Finding the Fourth Proportional to 324.21, 486.26 and 107.79
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Solution
The fourth proportional to 324.21, 486.26 and 107.79 is: 161.67
Step by Step Solution
- Step 1: Write the proportion equation
324.21 : 486.26 = 107.79 : x - Step 2: Convert to fraction form
324.21/486.26 = 107.79/x - Step 3: Cross multiply
324.21x = 486.26 × 107.79 - Step 4: Simplify right side
324.21x = 52,413.97 - Step 5: Solve for x
x = 52,413.97/324.21 - Step 6: Final answer
x = 161.67
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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.