Finding the Fourth Proportional to 415.99, 623.73 and 199.75
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Solution
The fourth proportional to 415.99, 623.73 and 199.75 is: 299.50
Step by Step Solution
- Step 1: Write the proportion equation
415.99 : 623.73 = 199.75 : x - Step 2: Convert to fraction form
415.99/623.73 = 199.75/x - Step 3: Cross multiply
415.99x = 623.73 × 199.75 - Step 4: Simplify right side
415.99x = 124,590.07 - Step 5: Solve for x
x = 124,590.07/415.99 - Step 6: Final answer
x = 299.50
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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.