Finding the Fourth Proportional to 324.46, 486.68 and 80.99
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Solution
The fourth proportional to 324.46, 486.68 and 80.99 is: 121.48
Step by Step Solution
- Step 1: Write the proportion equation
324.46 : 486.68 = 80.99 : x - Step 2: Convert to fraction form
324.46/486.68 = 80.99/x - Step 3: Cross multiply
324.46x = 486.68 × 80.99 - Step 4: Simplify right side
324.46x = 39,413.98 - Step 5: Solve for x
x = 39,413.98/324.46 - Step 6: Final answer
x = 121.48
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1.5x scale
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.