Finding the Fourth Proportional to 339.55, 509.79 and 200.99
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Solution
The fourth proportional to 339.55, 509.79 and 200.99 is: 301.75
Step by Step Solution
- Step 1: Write the proportion equation
339.55 : 509.79 = 200.99 : x - Step 2: Convert to fraction form
339.55/509.79 = 200.99/x - Step 3: Cross multiply
339.55x = 509.79 × 200.99 - Step 4: Simplify right side
339.55x = 102,460.94 - Step 5: Solve for x
x = 102,460.94/339.55 - Step 6: Final answer
x = 301.75
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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.