Finding the Fourth Proportional to 122.68, 183.68 and 68.44
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Solution
The fourth proportional to 122.68, 183.68 and 68.44 is: 102.47
Step by Step Solution
- Step 1: Write the proportion equation
122.68 : 183.68 = 68.44 : x - Step 2: Convert to fraction form
122.68/183.68 = 68.44/x - Step 3: Cross multiply
122.68x = 183.68 × 68.44 - Step 4: Simplify right side
122.68x = 12,571.06 - Step 5: Solve for x
x = 12,571.06/122.68 - Step 6: Final answer
x = 102.47
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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.