Finding the Fourth Proportional to 122.77, 183.75 and 107.79
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Solution
The fourth proportional to 122.77, 183.75 and 107.79 is: 161.33
Step by Step Solution
- Step 1: Write the proportion equation
122.77 : 183.75 = 107.79 : x - Step 2: Convert to fraction form
122.77/183.75 = 107.79/x - Step 3: Cross multiply
122.77x = 183.75 × 107.79 - Step 4: Simplify right side
122.77x = 19,806.41 - Step 5: Solve for x
x = 19,806.41/122.77 - Step 6: Final answer
x = 161.33
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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.