Finding the Fourth Proportional to 638.93, 959.27 and 330.99
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Solution
The fourth proportional to 638.93, 959.27 and 330.99 is: 496.94
Step by Step Solution
- Step 1: Write the proportion equation
638.93 : 959.27 = 330.99 : x - Step 2: Convert to fraction form
638.93/959.27 = 330.99/x - Step 3: Cross multiply
638.93x = 959.27 × 330.99 - Step 4: Simplify right side
638.93x = 317,507.12 - Step 5: Solve for x
x = 317,507.12/638.93 - Step 6: Final answer
x = 496.94
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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.