Finding the Fourth Proportional to 392.99, 589.75 and 187.79
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Solution
The fourth proportional to 392.99, 589.75 and 187.79 is: 281.81
Step by Step Solution
- Step 1: Write the proportion equation
392.99 : 589.75 = 187.79 : x - Step 2: Convert to fraction form
392.99/589.75 = 187.79/x - Step 3: Cross multiply
392.99x = 589.75 × 187.79 - Step 4: Simplify right side
392.99x = 110,745.73 - Step 5: Solve for x
x = 110,745.73/392.99 - Step 6: Final answer
x = 281.81
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.