Finding the Fourth Proportional to 84.01, 126.26 and 52.09
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Solution
The fourth proportional to 84.01, 126.26 and 52.09 is: 78.28
Step by Step Solution
- Step 1: Write the proportion equation
84.01 : 126.26 = 52.09 : x - Step 2: Convert to fraction form
84.01/126.26 = 52.09/x - Step 3: Cross multiply
84.01x = 126.26 × 52.09 - Step 4: Simplify right side
84.01x = 6,576.62 - Step 5: Solve for x
x = 6,576.62/84.01 - Step 6: Final answer
x = 78.28
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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.