Finding the Fourth Proportional to 415.14, 622.68 and 299.79
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Solution
The fourth proportional to 415.14, 622.68 and 299.79 is: 449.66
Step by Step Solution
- Step 1: Write the proportion equation
415.14 : 622.68 = 299.79 : x - Step 2: Convert to fraction form
415.14/622.68 = 299.79/x - Step 3: Cross multiply
415.14x = 622.68 × 299.79 - Step 4: Simplify right side
415.14x = 186,673.24 - Step 5: Solve for x
x = 186,673.24/415.14 - Step 6: Final answer
x = 449.66
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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.