Finding the Fourth Proportional to 126.26, 189.26 and 49.17
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Solution
The fourth proportional to 126.26, 189.26 and 49.17 is: 73.70
Step by Step Solution
- Step 1: Write the proportion equation
126.26 : 189.26 = 49.17 : x - Step 2: Convert to fraction form
126.26/189.26 = 49.17/x - Step 3: Cross multiply
126.26x = 189.26 × 49.17 - Step 4: Simplify right side
126.26x = 9,305.91 - Step 5: Solve for x
x = 9,305.91/126.26 - Step 6: Final answer
x = 73.70
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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.