Finding the Fourth Proportional to 146.22, 201.81 and 87.99
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Solution
The fourth proportional to 146.22, 201.81 and 87.99 is: 121.44
Step by Step Solution
- Step 1: Write the proportion equation
146.22 : 201.81 = 87.99 : x - Step 2: Convert to fraction form
146.22/201.81 = 87.99/x - Step 3: Cross multiply
146.22x = 201.81 × 87.99 - Step 4: Simplify right side
146.22x = 17,757.26 - Step 5: Solve for x
x = 17,757.26/146.22 - Step 6: Final answer
x = 121.44
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.