Finding the Fourth Proportional to 122.21, 183.36 and 112.08
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Solution
The fourth proportional to 122.21, 183.36 and 112.08 is: 168.17
Step by Step Solution
- Step 1: Write the proportion equation
122.21 : 183.36 = 112.08 : x - Step 2: Convert to fraction form
122.21/183.36 = 112.08/x - Step 3: Cross multiply
122.21x = 183.36 × 112.08 - Step 4: Simplify right side
122.21x = 20,552.10 - Step 5: Solve for x
x = 20,552.10/122.21 - Step 6: Final answer
x = 168.17
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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.