Finding the Fourth Proportional to 449.46, 620.25 and 252.99
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Solution
The fourth proportional to 449.46, 620.25 and 252.99 is: 349.12
Step by Step Solution
- Step 1: Write the proportion equation
449.46 : 620.25 = 252.99 : x - Step 2: Convert to fraction form
449.46/620.25 = 252.99/x - Step 3: Cross multiply
449.46x = 620.25 × 252.99 - Step 4: Simplify right side
449.46x = 156,917.05 - Step 5: Solve for x
x = 156,917.05/449.46 - Step 6: Final answer
x = 349.12
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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.