Finding the Fourth Proportional to 330.26, 495.05 and 214.79
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Solution
The fourth proportional to 330.26, 495.05 and 214.79 is: 321.95
Step by Step Solution
- Step 1: Write the proportion equation
330.26 : 495.05 = 214.79 : x - Step 2: Convert to fraction form
330.26/495.05 = 214.79/x - Step 3: Cross multiply
330.26x = 495.05 × 214.79 - Step 4: Simplify right side
330.26x = 106,328.24 - Step 5: Solve for x
x = 106,328.24/330.26 - Step 6: Final answer
x = 321.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.