Finding the Fourth Proportional to 392.99, 589.74 and 361.70
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Solution
The fourth proportional to 392.99, 589.74 and 361.70 is: 542.79
Step by Step Solution
- Step 1: Write the proportion equation
392.99 : 589.74 = 361.70 : x - Step 2: Convert to fraction form
392.99/589.74 = 361.70/x - Step 3: Cross multiply
392.99x = 589.74 × 361.70 - Step 4: Simplify right side
392.99x = 213,309.08 - Step 5: Solve for x
x = 213,309.08/392.99 - Step 6: Final answer
x = 542.79
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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.