Finding the Fourth Proportional to 260.81, 391.10 and 106.63
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Solution
The fourth proportional to 260.81, 391.10 and 106.63 is: 159.90
Step by Step Solution
- Step 1: Write the proportion equation
260.81 : 391.10 = 106.63 : x - Step 2: Convert to fraction form
260.81/391.10 = 106.63/x - Step 3: Cross multiply
260.81x = 391.10 × 106.63 - Step 4: Simplify right side
260.81x = 41,702.99 - Step 5: Solve for x
x = 41,702.99/260.81 - Step 6: Final answer
x = 159.90
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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.