Finding the Fourth Proportional to 378.44, 567.74 and 122.12
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Solution
The fourth proportional to 378.44, 567.74 and 122.12 is: 183.21
Step by Step Solution
- Step 1: Write the proportion equation
378.44 : 567.74 = 122.12 : x - Step 2: Convert to fraction form
378.44/567.74 = 122.12/x - Step 3: Cross multiply
378.44x = 567.74 × 122.12 - Step 4: Simplify right side
378.44x = 69,332.41 - Step 5: Solve for x
x = 69,332.41/378.44 - Step 6: Final answer
x = 183.21
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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.