Finding the Fourth Proportional to 257.94, 355.97 and 201.99
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Solution
The fourth proportional to 257.94, 355.97 and 201.99 is: 278.76
Step by Step Solution
- Step 1: Write the proportion equation
257.94 : 355.97 = 201.99 : x - Step 2: Convert to fraction form
257.94/355.97 = 201.99/x - Step 3: Cross multiply
257.94x = 355.97 × 201.99 - Step 4: Simplify right side
257.94x = 71,902.38 - Step 5: Solve for x
x = 71,902.38/257.94 - Step 6: Final answer
x = 278.76
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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.