Finding the Fourth Proportional to 415.26, 621.41 and 299.84
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Solution
The fourth proportional to 415.26, 621.41 and 299.84 is: 448.68
Step by Step Solution
- Step 1: Write the proportion equation
415.26 : 621.41 = 299.84 : x - Step 2: Convert to fraction form
415.26/621.41 = 299.84/x - Step 3: Cross multiply
415.26x = 621.41 × 299.84 - Step 4: Simplify right side
415.26x = 186,318.97 - Step 5: Solve for x
x = 186,318.97/415.26 - Step 6: Final answer
x = 448.68
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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.