Finding the Fourth Proportional to 309.60, 464.43 and 126.99
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Solution
The fourth proportional to 309.60, 464.43 and 126.99 is: 190.50
Step by Step Solution
- Step 1: Write the proportion equation
309.60 : 464.43 = 126.99 : x - Step 2: Convert to fraction form
309.60/464.43 = 126.99/x - Step 3: Cross multiply
309.60x = 464.43 × 126.99 - Step 4: Simplify right side
309.60x = 58,977.97 - Step 5: Solve for x
x = 58,977.97/309.60 - Step 6: Final answer
x = 190.50
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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.