Finding the Fourth Proportional to 276.26, 381.26 and 197.55
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Solution
The fourth proportional to 276.26, 381.26 and 197.55 is: 272.64
Step by Step Solution
- Step 1: Write the proportion equation
276.26 : 381.26 = 197.55 : x - Step 2: Convert to fraction form
276.26/381.26 = 197.55/x - Step 3: Cross multiply
276.26x = 381.26 × 197.55 - Step 4: Simplify right side
276.26x = 75,318.41 - Step 5: Solve for x
x = 75,318.41/276.26 - Step 6: Final answer
x = 272.64
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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.