Finding the Fourth Proportional to 399.99, 599.99 and 126.08
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Solution
The fourth proportional to 399.99, 599.99 and 126.08 is: 189.12
Step by Step Solution
- Step 1: Write the proportion equation
399.99 : 599.99 = 126.08 : x - Step 2: Convert to fraction form
399.99/599.99 = 126.08/x - Step 3: Cross multiply
399.99x = 599.99 × 126.08 - Step 4: Simplify right side
399.99x = 75,645.55 - Step 5: Solve for x
x = 75,645.55/399.99 - Step 6: Final answer
x = 189.12
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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.