Finding the Fourth Proportional to 438.67, 605.42 and 276.99
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Solution
The fourth proportional to 438.67, 605.42 and 276.99 is: 382.28
Step by Step Solution
- Step 1: Write the proportion equation
438.67 : 605.42 = 276.99 : x - Step 2: Convert to fraction form
438.67/605.42 = 276.99/x - Step 3: Cross multiply
438.67x = 605.42 × 276.99 - Step 4: Simplify right side
438.67x = 167,695.61 - Step 5: Solve for x
x = 167,695.61/438.67 - Step 6: Final answer
x = 382.28
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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.