Finding the Fourth Proportional to 276.72, 381.72 and 160.20
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Solution
The fourth proportional to 276.72, 381.72 and 160.20 is: 220.99
Step by Step Solution
- Step 1: Write the proportion equation
276.72 : 381.72 = 160.20 : x - Step 2: Convert to fraction form
276.72/381.72 = 160.20/x - Step 3: Cross multiply
276.72x = 381.72 × 160.20 - Step 4: Simplify right side
276.72x = 61,151.54 - Step 5: Solve for x
x = 61,151.54/276.72 - Step 6: Final answer
x = 220.99
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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.