Finding the Fourth Proportional to 289.01, 398.84 and 170.99
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Solution
The fourth proportional to 289.01, 398.84 and 170.99 is: 235.97
Step by Step Solution
- Step 1: Write the proportion equation
289.01 : 398.84 = 170.99 : x - Step 2: Convert to fraction form
289.01/398.84 = 170.99/x - Step 3: Cross multiply
289.01x = 398.84 × 170.99 - Step 4: Simplify right side
289.01x = 68,197.65 - Step 5: Solve for x
x = 68,197.65/289.01 - Step 6: Final answer
x = 235.97
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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.