Finding the Fourth Proportional to 113.15, 169.62 and 84.23
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Solution
The fourth proportional to 113.15, 169.62 and 84.23 is: 126.26
Step by Step Solution
- Step 1: Write the proportion equation
113.15 : 169.62 = 84.23 : x - Step 2: Convert to fraction form
113.15/169.62 = 84.23/x - Step 3: Cross multiply
113.15x = 169.62 × 84.23 - Step 4: Simplify right side
113.15x = 14,286.24 - Step 5: Solve for x
x = 14,286.24/113.15 - Step 6: Final answer
x = 126.26
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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.