Finding the Fourth Proportional to 251.20, 346.49 and 163.99
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Solution
The fourth proportional to 251.20, 346.49 and 163.99 is: 226.20
Step by Step Solution
- Step 1: Write the proportion equation
251.20 : 346.49 = 163.99 : x - Step 2: Convert to fraction form
251.20/346.49 = 163.99/x - Step 3: Cross multiply
251.20x = 346.49 × 163.99 - Step 4: Simplify right side
251.20x = 56,819.16 - Step 5: Solve for x
x = 56,819.16/251.20 - Step 6: Final answer
x = 226.20
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.