Finding the Fourth Proportional to 84.26, 125.82 and 63.99
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Solution
The fourth proportional to 84.26, 125.82 and 63.99 is: 95.56
Step by Step Solution
- Step 1: Write the proportion equation
84.26 : 125.82 = 63.99 : x - Step 2: Convert to fraction form
84.26/125.82 = 63.99/x - Step 3: Cross multiply
84.26x = 125.82 × 63.99 - Step 4: Simplify right side
84.26x = 8,051.22 - Step 5: Solve for x
x = 8,051.22/84.26 - Step 6: Final answer
x = 95.56
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.