Finding the Fourth Proportional to 449.70, 620.68 and 263.28
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Solution
The fourth proportional to 449.70, 620.68 and 263.28 is: 363.38
Step by Step Solution
- Step 1: Write the proportion equation
449.70 : 620.68 = 263.28 : x - Step 2: Convert to fraction form
449.70/620.68 = 263.28/x - Step 3: Cross multiply
449.70x = 620.68 × 263.28 - Step 4: Simplify right side
449.70x = 163,412.63 - Step 5: Solve for x
x = 163,412.63/449.70 - Step 6: Final answer
x = 363.38
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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.