Finding the Fourth Proportional to 415.44, 622.94 and 126.84
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Solution
The fourth proportional to 415.44, 622.94 and 126.84 is: 190.19
Step by Step Solution
- Step 1: Write the proportion equation
415.44 : 622.94 = 126.84 : x - Step 2: Convert to fraction form
415.44/622.94 = 126.84/x - Step 3: Cross multiply
415.44x = 622.94 × 126.84 - Step 4: Simplify right side
415.44x = 79,013.08 - Step 5: Solve for x
x = 79,013.08/415.44 - Step 6: Final answer
x = 190.19
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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.