Finding the Fourth Proportional to 330.26, 455.63 and 213.75
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Solution
The fourth proportional to 330.26, 455.63 and 213.75 is: 294.89
Step by Step Solution
- Step 1: Write the proportion equation
330.26 : 455.63 = 213.75 : x - Step 2: Convert to fraction form
330.26/455.63 = 213.75/x - Step 3: Cross multiply
330.26x = 455.63 × 213.75 - Step 4: Simplify right side
330.26x = 97,389.84 - Step 5: Solve for x
x = 97,389.84/330.26 - Step 6: Final answer
x = 294.89
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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.