Finding the Fourth Proportional to 414.20, 621.08 and 140.26
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Solution
The fourth proportional to 414.20, 621.08 and 140.26 is: 210.32
Step by Step Solution
- Step 1: Write the proportion equation
414.20 : 621.08 = 140.26 : x - Step 2: Convert to fraction form
414.20/621.08 = 140.26/x - Step 3: Cross multiply
414.20x = 621.08 × 140.26 - Step 4: Simplify right side
414.20x = 87,112.68 - Step 5: Solve for x
x = 87,112.68/414.20 - Step 6: Final answer
x = 210.32
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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.