Finding the Fourth Proportional to 378.19, 567.24 and 121.69
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Solution
The fourth proportional to 378.19, 567.24 and 121.69 is: 182.52
Step by Step Solution
- Step 1: Write the proportion equation
378.19 : 567.24 = 121.69 : x - Step 2: Convert to fraction form
378.19/567.24 = 121.69/x - Step 3: Cross multiply
378.19x = 567.24 × 121.69 - Step 4: Simplify right side
378.19x = 69,027.44 - Step 5: Solve for x
x = 69,027.44/378.19 - Step 6: Final answer
x = 182.52
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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.