Finding the Fourth Proportional to 319.56, 441.26 and 257.19
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Solution
The fourth proportional to 319.56, 441.26 and 257.19 is: 355.14
Step by Step Solution
- Step 1: Write the proportion equation
319.56 : 441.26 = 257.19 : x - Step 2: Convert to fraction form
319.56/441.26 = 257.19/x - Step 3: Cross multiply
319.56x = 441.26 × 257.19 - Step 4: Simplify right side
319.56x = 113,488.99 - Step 5: Solve for x
x = 113,488.99/319.56 - Step 6: Final answer
x = 355.14
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.