Finding the Fourth Proportional to 415.24, 622.87 and 122.75
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Solution
The fourth proportional to 415.24, 622.87 and 122.75 is: 184.12
Step by Step Solution
- Step 1: Write the proportion equation
415.24 : 622.87 = 122.75 : x - Step 2: Convert to fraction form
415.24/622.87 = 122.75/x - Step 3: Cross multiply
415.24x = 622.87 × 122.75 - Step 4: Simplify right side
415.24x = 76,456.21 - Step 5: Solve for x
x = 76,456.21/415.24 - Step 6: Final answer
x = 184.12
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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.