Finding the Fourth Proportional to 76.74, 115.11 and 22.68
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Solution
The fourth proportional to 76.74, 115.11 and 22.68 is: 34.01
Step by Step Solution
- Step 1: Write the proportion equation
76.74 : 115.11 = 22.68 : x - Step 2: Convert to fraction form
76.74/115.11 = 22.68/x - Step 3: Cross multiply
76.74x = 115.11 × 22.68 - Step 4: Simplify right side
76.74x = 2,610.12 - Step 5: Solve for x
x = 2,610.12/76.74 - Step 6: Final answer
x = 34.01
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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.