Finding the Fourth Proportional to 415.44, 623.26 and 126.88
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Solution
The fourth proportional to 415.44, 623.26 and 126.88 is: 190.35
Step by Step Solution
- Step 1: Write the proportion equation
415.44 : 623.26 = 126.88 : x - Step 2: Convert to fraction form
415.44/623.26 = 126.88/x - Step 3: Cross multiply
415.44x = 623.26 × 126.88 - Step 4: Simplify right side
415.44x = 79,079.23 - Step 5: Solve for x
x = 79,079.23/415.44 - Step 6: Final answer
x = 190.35
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.