Finding the Fourth Proportional to 260.44, 389.97 and 214.99
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Solution
The fourth proportional to 260.44, 389.97 and 214.99 is: 321.91
Step by Step Solution
- Step 1: Write the proportion equation
260.44 : 389.97 = 214.99 : x - Step 2: Convert to fraction form
260.44/389.97 = 214.99/x - Step 3: Cross multiply
260.44x = 389.97 × 214.99 - Step 4: Simplify right side
260.44x = 83,839.33 - Step 5: Solve for x
x = 83,839.33/260.44 - Step 6: Final answer
x = 321.91
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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.