Finding the Fourth Proportional to 113.96, 157.18 and 84.44
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Solution
The fourth proportional to 113.96, 157.18 and 84.44 is: 116.46
Step by Step Solution
- Step 1: Write the proportion equation
113.96 : 157.18 = 84.44 : x - Step 2: Convert to fraction form
113.96/157.18 = 84.44/x - Step 3: Cross multiply
113.96x = 157.18 × 84.44 - Step 4: Simplify right side
113.96x = 13,272.28 - Step 5: Solve for x
x = 13,272.28/113.96 - Step 6: Final answer
x = 116.46
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.