Finding the Fourth Proportional to 358.75, 495.08 and 220.75
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Solution
The fourth proportional to 358.75, 495.08 and 220.75 is: 304.64
Step by Step Solution
- Step 1: Write the proportion equation
358.75 : 495.08 = 220.75 : x - Step 2: Convert to fraction form
358.75/495.08 = 220.75/x - Step 3: Cross multiply
358.75x = 495.08 × 220.75 - Step 4: Simplify right side
358.75x = 109,288.91 - Step 5: Solve for x
x = 109,288.91/358.75 - Step 6: Final answer
x = 304.64
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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.