Finding the Fourth Proportional to 489.49, 675.53 and 323.42
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Solution
The fourth proportional to 489.49, 675.53 and 323.42 is: 446.34
Step by Step Solution
- Step 1: Write the proportion equation
489.49 : 675.53 = 323.42 : x - Step 2: Convert to fraction form
489.49/675.53 = 323.42/x - Step 3: Cross multiply
489.49x = 675.53 × 323.42 - Step 4: Simplify right side
489.49x = 218,476.53 - Step 5: Solve for x
x = 218,476.53/489.49 - Step 6: Final answer
x = 446.34
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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.