Finding the Fourth Proportional to 276.44, 381.08 and 210.84
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Solution
The fourth proportional to 276.44, 381.08 and 210.84 is: 290.65
Step by Step Solution
- Step 1: Write the proportion equation
276.44 : 381.08 = 210.84 : x - Step 2: Convert to fraction form
276.44/381.08 = 210.84/x - Step 3: Cross multiply
276.44x = 381.08 × 210.84 - Step 4: Simplify right side
276.44x = 80,346.91 - Step 5: Solve for x
x = 80,346.91/276.44 - Step 6: Final answer
x = 290.65
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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.