Finding the Fourth Proportional to 84.09, 125.91 and 63.66
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Solution
The fourth proportional to 84.09, 125.91 and 63.66 is: 95.32
Step by Step Solution
- Step 1: Write the proportion equation
84.09 : 125.91 = 63.66 : x - Step 2: Convert to fraction form
84.09/125.91 = 63.66/x - Step 3: Cross multiply
84.09x = 125.91 × 63.66 - Step 4: Simplify right side
84.09x = 8,015.43 - Step 5: Solve for x
x = 8,015.43/84.09 - Step 6: Final answer
x = 95.32
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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.