Finding the Fourth Proportional to 126.09, 189.07 and 44.91
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Solution
The fourth proportional to 126.09, 189.07 and 44.91 is: 67.34
Step by Step Solution
- Step 1: Write the proportion equation
126.09 : 189.07 = 44.91 : x - Step 2: Convert to fraction form
126.09/189.07 = 44.91/x - Step 3: Cross multiply
126.09x = 189.07 × 44.91 - Step 4: Simplify right side
126.09x = 8,491.13 - Step 5: Solve for x
x = 8,491.13/126.09 - Step 6: Final answer
x = 67.34
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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.