Finding the Fourth Proportional to 481.44, 664.42 and 285.02
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Solution
The fourth proportional to 481.44, 664.42 and 285.02 is: 393.35
Step by Step Solution
- Step 1: Write the proportion equation
481.44 : 664.42 = 285.02 : x - Step 2: Convert to fraction form
481.44/664.42 = 285.02/x - Step 3: Cross multiply
481.44x = 664.42 × 285.02 - Step 4: Simplify right side
481.44x = 189,372.99 - Step 5: Solve for x
x = 189,372.99/481.44 - Step 6: Final answer
x = 393.35
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.