Finding the Fourth Proportional to 642.26, 963.36 and 209.41
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Solution
The fourth proportional to 642.26, 963.36 and 209.41 is: 314.11
Step by Step Solution
- Step 1: Write the proportion equation
642.26 : 963.36 = 209.41 : x - Step 2: Convert to fraction form
642.26/963.36 = 209.41/x - Step 3: Cross multiply
642.26x = 963.36 × 209.41 - Step 4: Simplify right side
642.26x = 201,737.22 - Step 5: Solve for x
x = 201,737.22/642.26 - Step 6: Final answer
x = 314.11
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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.