Finding the Fourth Proportional to 489.74, 733.80 and 344.75
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Solution
The fourth proportional to 489.74, 733.80 and 344.75 is: 516.55
Step by Step Solution
- Step 1: Write the proportion equation
489.74 : 733.80 = 344.75 : x - Step 2: Convert to fraction form
489.74/733.80 = 344.75/x - Step 3: Cross multiply
489.74x = 733.80 × 344.75 - Step 4: Simplify right side
489.74x = 252,977.55 - Step 5: Solve for x
x = 252,977.55/489.74 - Step 6: Final answer
x = 516.55
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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.