Finding the Fourth Proportional to 81.37, 122.07 and 27.26
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Solution
The fourth proportional to 81.37, 122.07 and 27.26 is: 40.90
Step by Step Solution
- Step 1: Write the proportion equation
81.37 : 122.07 = 27.26 : x - Step 2: Convert to fraction form
81.37/122.07 = 27.26/x - Step 3: Cross multiply
81.37x = 122.07 × 27.26 - Step 4: Simplify right side
81.37x = 3,327.63 - Step 5: Solve for x
x = 3,327.63/81.37 - Step 6: Final answer
x = 40.90
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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.