Finding the Fourth Proportional to 122.60, 183.73 and 76.92
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Solution
The fourth proportional to 122.60, 183.73 and 76.92 is: 115.28
Step by Step Solution
- Step 1: Write the proportion equation
122.60 : 183.73 = 76.92 : x - Step 2: Convert to fraction form
122.60/183.73 = 76.92/x - Step 3: Cross multiply
122.60x = 183.73 × 76.92 - Step 4: Simplify right side
122.60x = 14,133.43 - Step 5: Solve for x
x = 14,133.43/122.60 - Step 6: Final answer
x = 115.28
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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.