Finding the Fourth Proportional to 748.18, 1,122.26 and 261.23
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Solution
The fourth proportional to 748.18, 1,122.26 and 261.23 is: 391.85
Step by Step Solution
- Step 1: Write the proportion equation
748.18 : 1,122.26 = 261.23 : x - Step 2: Convert to fraction form
748.18/1,122.26 = 261.23/x - Step 3: Cross multiply
748.18x = 1,122.26 × 261.23 - Step 4: Simplify right side
748.18x = 293,171.44 - Step 5: Solve for x
x = 293,171.44/748.18 - Step 6: Final answer
x = 391.85
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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.