Finding the Fourth Proportional to 122.75, 185.07 and 98.99
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Solution
The fourth proportional to 122.75, 185.07 and 98.99 is: 149.25
Step by Step Solution
- Step 1: Write the proportion equation
122.75 : 185.07 = 98.99 : x - Step 2: Convert to fraction form
122.75/185.07 = 98.99/x - Step 3: Cross multiply
122.75x = 185.07 × 98.99 - Step 4: Simplify right side
122.75x = 18,320.08 - Step 5: Solve for x
x = 18,320.08/122.75 - Step 6: Final answer
x = 149.25
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.