Finding the Fourth Proportional to 449.48, 620.24 and 252.99
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Solution
The fourth proportional to 449.48, 620.24 and 252.99 is: 349.10
Step by Step Solution
- Step 1: Write the proportion equation
449.48 : 620.24 = 252.99 : x - Step 2: Convert to fraction form
449.48/620.24 = 252.99/x - Step 3: Cross multiply
449.48x = 620.24 × 252.99 - Step 4: Simplify right side
449.48x = 156,913.25 - Step 5: Solve for x
x = 156,913.25/449.48 - Step 6: Final answer
x = 349.10
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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.