Finding the Fourth Proportional to 415.33, 622.69 and 252.99
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Solution
The fourth proportional to 415.33, 622.69 and 252.99 is: 379.30
Step by Step Solution
- Step 1: Write the proportion equation
415.33 : 622.69 = 252.99 : x - Step 2: Convert to fraction form
415.33/622.69 = 252.99/x - Step 3: Cross multiply
415.33x = 622.69 × 252.99 - Step 4: Simplify right side
415.33x = 157,533.71 - Step 5: Solve for x
x = 157,533.71/415.33 - Step 6: Final answer
x = 379.30
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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.