Finding the Fourth Proportional to 330.75, 494.19 and 317.99
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Solution
The fourth proportional to 330.75, 494.19 and 317.99 is: 475.13
Step by Step Solution
- Step 1: Write the proportion equation
330.75 : 494.19 = 317.99 : x - Step 2: Convert to fraction form
330.75/494.19 = 317.99/x - Step 3: Cross multiply
330.75x = 494.19 × 317.99 - Step 4: Simplify right side
330.75x = 157,148.71 - Step 5: Solve for x
x = 157,148.71/330.75 - Step 6: Final answer
x = 475.13
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.