Finding the Fourth Proportional to 378.99, 523.02 and 239.05
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Solution
The fourth proportional to 378.99, 523.02 and 239.05 is: 329.90
Step by Step Solution
- Step 1: Write the proportion equation
378.99 : 523.02 = 239.05 : x - Step 2: Convert to fraction form
378.99/523.02 = 239.05/x - Step 3: Cross multiply
378.99x = 523.02 × 239.05 - Step 4: Simplify right side
378.99x = 125,027.93 - Step 5: Solve for x
x = 125,027.93/378.99 - Step 6: Final answer
x = 329.90
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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.