Finding the Fourth Proportional to 320.26, 441.21 and 261.70
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Solution
The fourth proportional to 320.26, 441.21 and 261.70 is: 360.53
Step by Step Solution
- Step 1: Write the proportion equation
320.26 : 441.21 = 261.70 : x - Step 2: Convert to fraction form
320.26/441.21 = 261.70/x - Step 3: Cross multiply
320.26x = 441.21 × 261.70 - Step 4: Simplify right side
320.26x = 115,464.66 - Step 5: Solve for x
x = 115,464.66/320.26 - Step 6: Final answer
x = 360.53
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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.