Finding the Fourth Proportional to 309.38, 464.00 and 90.01
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Solution
The fourth proportional to 309.38, 464.00 and 90.01 is: 134.99
Step by Step Solution
- Step 1: Write the proportion equation
309.38 : 464.00 = 90.01 : x - Step 2: Convert to fraction form
309.38/464.00 = 90.01/x - Step 3: Cross multiply
309.38x = 464.00 × 90.01 - Step 4: Simplify right side
309.38x = 41,763.03 - Step 5: Solve for x
x = 41,763.03/309.38 - Step 6: Final answer
x = 134.99
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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.