Finding the Fourth Proportional to 84.08, 125.96 and 76.08
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Solution
The fourth proportional to 84.08, 125.96 and 76.08 is: 113.98
Step by Step Solution
- Step 1: Write the proportion equation
84.08 : 125.96 = 76.08 : x - Step 2: Convert to fraction form
84.08/125.96 = 76.08/x - Step 3: Cross multiply
84.08x = 125.96 × 76.08 - Step 4: Simplify right side
84.08x = 9,583.04 - Step 5: Solve for x
x = 9,583.04/84.08 - Step 6: Final answer
x = 113.98
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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.