Finding the Fourth Proportional to 263.99, 395.99 and 81.38
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Solution
The fourth proportional to 263.99, 395.99 and 81.38 is: 122.07
Step by Step Solution
- Step 1: Write the proportion equation
263.99 : 395.99 = 81.38 : x - Step 2: Convert to fraction form
263.99/395.99 = 81.38/x - Step 3: Cross multiply
263.99x = 395.99 × 81.38 - Step 4: Simplify right side
263.99x = 32,226.55 - Step 5: Solve for x
x = 32,226.55/263.99 - Step 6: Final answer
x = 122.07
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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.