Finding the Fourth Proportional to 449.40, 620.21 and 262.99
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Solution
The fourth proportional to 449.40, 620.21 and 262.99 is: 362.95
Step by Step Solution
- Step 1: Write the proportion equation
449.40 : 620.21 = 262.99 : x - Step 2: Convert to fraction form
449.40/620.21 = 262.99/x - Step 3: Cross multiply
449.40x = 620.21 × 262.99 - Step 4: Simplify right side
449.40x = 163,109.03 - Step 5: Solve for x
x = 163,109.03/449.40 - Step 6: Final answer
x = 362.95
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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.