Finding the Fourth Proportional to 358.78, 495.08 and 201.38
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Solution
The fourth proportional to 358.78, 495.08 and 201.38 is: 277.88
Step by Step Solution
- Step 1: Write the proportion equation
358.78 : 495.08 = 201.38 : x - Step 2: Convert to fraction form
358.78/495.08 = 201.38/x - Step 3: Cross multiply
358.78x = 495.08 × 201.38 - Step 4: Simplify right side
358.78x = 99,699.21 - Step 5: Solve for x
x = 99,699.21/358.78 - Step 6: Final answer
x = 277.88
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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.