Finding the Fourth Proportional to 387.26, 580.98 and 170.86
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Solution
The fourth proportional to 387.26, 580.98 and 170.86 is: 256.33
Step by Step Solution
- Step 1: Write the proportion equation
387.26 : 580.98 = 170.86 : x - Step 2: Convert to fraction form
387.26/580.98 = 170.86/x - Step 3: Cross multiply
387.26x = 580.98 × 170.86 - Step 4: Simplify right side
387.26x = 99,266.24 - Step 5: Solve for x
x = 99,266.24/387.26 - Step 6: Final answer
x = 256.33
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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.