Finding the Fourth Proportional to 320.33, 442.26 and 209.99
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Solution
The fourth proportional to 320.33, 442.26 and 209.99 is: 289.92
Step by Step Solution
- Step 1: Write the proportion equation
320.33 : 442.26 = 209.99 : x - Step 2: Convert to fraction form
320.33/442.26 = 209.99/x - Step 3: Cross multiply
320.33x = 442.26 × 209.99 - Step 4: Simplify right side
320.33x = 92,869.13 - Step 5: Solve for x
x = 92,869.13/320.33 - Step 6: Final answer
x = 289.92
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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.