Finding the Fourth Proportional to 489.24, 674.88 and 302.58
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Solution
The fourth proportional to 489.24, 674.88 and 302.58 is: 417.39
Step by Step Solution
- Step 1: Write the proportion equation
489.24 : 674.88 = 302.58 : x - Step 2: Convert to fraction form
489.24/674.88 = 302.58/x - Step 3: Cross multiply
489.24x = 674.88 × 302.58 - Step 4: Simplify right side
489.24x = 204,205.19 - Step 5: Solve for x
x = 204,205.19/489.24 - Step 6: Final answer
x = 417.39
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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.