Finding the Fourth Proportional to 438.68, 605.19 and 281.26
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Solution
The fourth proportional to 438.68, 605.19 and 281.26 is: 388.02
Step by Step Solution
- Step 1: Write the proportion equation
438.68 : 605.19 = 281.26 : x - Step 2: Convert to fraction form
438.68/605.19 = 281.26/x - Step 3: Cross multiply
438.68x = 605.19 × 281.26 - Step 4: Simplify right side
438.68x = 170,215.74 - Step 5: Solve for x
x = 170,215.74/438.68 - Step 6: Final answer
x = 388.02
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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.