Finding the Fourth Proportional to 393.99, 590.99 and 137.31
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Solution
The fourth proportional to 393.99, 590.99 and 137.31 is: 205.97
Step by Step Solution
- Step 1: Write the proportion equation
393.99 : 590.99 = 137.31 : x - Step 2: Convert to fraction form
393.99/590.99 = 137.31/x - Step 3: Cross multiply
393.99x = 590.99 × 137.31 - Step 4: Simplify right side
393.99x = 81,148.84 - Step 5: Solve for x
x = 81,148.84/393.99 - Step 6: Final answer
x = 205.97
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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.