Finding the Fourth Proportional to 84.63, 126.99 and 35.91
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Solution
The fourth proportional to 84.63, 126.99 and 35.91 is: 53.88
Step by Step Solution
- Step 1: Write the proportion equation
84.63 : 126.99 = 35.91 : x - Step 2: Convert to fraction form
84.63/126.99 = 35.91/x - Step 3: Cross multiply
84.63x = 126.99 × 35.91 - Step 4: Simplify right side
84.63x = 4,560.21 - Step 5: Solve for x
x = 4,560.21/84.63 - Step 6: Final answer
x = 53.88
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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.