Finding the Fourth Proportional to 340.88, 470.41 and 209.99
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Solution
The fourth proportional to 340.88, 470.41 and 209.99 is: 289.79
Step by Step Solution
- Step 1: Write the proportion equation
340.88 : 470.41 = 209.99 : x - Step 2: Convert to fraction form
340.88/470.41 = 209.99/x - Step 3: Cross multiply
340.88x = 470.41 × 209.99 - Step 4: Simplify right side
340.88x = 98,782.05 - Step 5: Solve for x
x = 98,782.05/340.88 - Step 6: Final answer
x = 289.79
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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.