Finding the Fourth Proportional to 320.10, 441.14 and 221.68
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Solution
The fourth proportional to 320.10, 441.14 and 221.68 is: 305.50
Step by Step Solution
- Step 1: Write the proportion equation
320.10 : 441.14 = 221.68 : x - Step 2: Convert to fraction form
320.10/441.14 = 221.68/x - Step 3: Cross multiply
320.10x = 441.14 × 221.68 - Step 4: Simplify right side
320.10x = 97,791.92 - Step 5: Solve for x
x = 97,791.92/320.10 - Step 6: Final answer
x = 305.50
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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.