Finding the Fourth Proportional to 94.08, 140.96 and 84.68
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Solution
The fourth proportional to 94.08, 140.96 and 84.68 is: 126.88
Step by Step Solution
- Step 1: Write the proportion equation
94.08 : 140.96 = 84.68 : x - Step 2: Convert to fraction form
94.08/140.96 = 84.68/x - Step 3: Cross multiply
94.08x = 140.96 × 84.68 - Step 4: Simplify right side
94.08x = 11,936.49 - Step 5: Solve for x
x = 11,936.49/94.08 - Step 6: Final answer
x = 126.88
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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.