Finding the Fourth Proportional to 389.44, 537.26 and 231.99
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Solution
The fourth proportional to 389.44, 537.26 and 231.99 is: 320.05
Step by Step Solution
- Step 1: Write the proportion equation
389.44 : 537.26 = 231.99 : x - Step 2: Convert to fraction form
389.44/537.26 = 231.99/x - Step 3: Cross multiply
389.44x = 537.26 × 231.99 - Step 4: Simplify right side
389.44x = 124,638.79 - Step 5: Solve for x
x = 124,638.79/389.44 - Step 6: Final answer
x = 320.05
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.