Finding the Fourth Proportional to 300.81, 415.19 and 202.65
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Solution
The fourth proportional to 300.81, 415.19 and 202.65 is: 279.70
Step by Step Solution
- Step 1: Write the proportion equation
300.81 : 415.19 = 202.65 : x - Step 2: Convert to fraction form
300.81/415.19 = 202.65/x - Step 3: Cross multiply
300.81x = 415.19 × 202.65 - Step 4: Simplify right side
300.81x = 84,137.24 - Step 5: Solve for x
x = 84,137.24/300.81 - Step 6: Final answer
x = 279.70
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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.