Finding the Fourth Proportional to 122.16, 183.02 and 80.99
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Solution
The fourth proportional to 122.16, 183.02 and 80.99 is: 121.33
Step by Step Solution
- Step 1: Write the proportion equation
122.16 : 183.02 = 80.99 : x - Step 2: Convert to fraction form
122.16/183.02 = 80.99/x - Step 3: Cross multiply
122.16x = 183.02 × 80.99 - Step 4: Simplify right side
122.16x = 14,821.47 - Step 5: Solve for x
x = 14,821.47/122.16 - Step 6: Final answer
x = 121.33
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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.