Finding the Fourth Proportional to 84.20, 116.26 and 58.44
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Solution
The fourth proportional to 84.20, 116.26 and 58.44 is: 80.69
Step by Step Solution
- Step 1: Write the proportion equation
84.20 : 116.26 = 58.44 : x - Step 2: Convert to fraction form
84.20/116.26 = 58.44/x - Step 3: Cross multiply
84.20x = 116.26 × 58.44 - Step 4: Simplify right side
84.20x = 6,794.23 - Step 5: Solve for x
x = 6,794.23/84.20 - Step 6: Final answer
x = 80.69
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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.