Finding the Fourth Proportional to 126.70, 189.83 and 122.99
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Solution
The fourth proportional to 126.70, 189.83 and 122.99 is: 184.27
Step by Step Solution
- Step 1: Write the proportion equation
126.70 : 189.83 = 122.99 : x - Step 2: Convert to fraction form
126.70/189.83 = 122.99/x - Step 3: Cross multiply
126.70x = 189.83 × 122.99 - Step 4: Simplify right side
126.70x = 23,346.55 - Step 5: Solve for x
x = 23,346.55/126.70 - Step 6: Final answer
x = 184.27
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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.