Finding the Fourth Proportional to 263.24, 394.91 and 126.21
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Solution
The fourth proportional to 263.24, 394.91 and 126.21 is: 189.34
Step by Step Solution
- Step 1: Write the proportion equation
263.24 : 394.91 = 126.21 : x - Step 2: Convert to fraction form
263.24/394.91 = 126.21/x - Step 3: Cross multiply
263.24x = 394.91 × 126.21 - Step 4: Simplify right side
263.24x = 49,841.23 - Step 5: Solve for x
x = 49,841.23/263.24 - Step 6: Final answer
x = 189.34
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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.