Finding the Fourth Proportional to 415.26, 622.80 and 209.94
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Solution
The fourth proportional to 415.26, 622.80 and 209.94 is: 314.86
Step by Step Solution
- Step 1: Write the proportion equation
415.26 : 622.80 = 209.94 : x - Step 2: Convert to fraction form
415.26/622.80 = 209.94/x - Step 3: Cross multiply
415.26x = 622.80 × 209.94 - Step 4: Simplify right side
415.26x = 130,750.63 - Step 5: Solve for x
x = 130,750.63/415.26 - Step 6: Final answer
x = 314.86
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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.