Finding the Fourth Proportional to 391.24, 586.41 and 159.99
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Solution
The fourth proportional to 391.24, 586.41 and 159.99 is: 239.79
Step by Step Solution
- Step 1: Write the proportion equation
391.24 : 586.41 = 159.99 : x - Step 2: Convert to fraction form
391.24/586.41 = 159.99/x - Step 3: Cross multiply
391.24x = 586.41 × 159.99 - Step 4: Simplify right side
391.24x = 93,816.94 - Step 5: Solve for x
x = 93,816.94/391.24 - Step 6: Final answer
x = 239.79
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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.