Finding the Fourth Proportional to 320.99, 443.03 and 189.99
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Solution
The fourth proportional to 320.99, 443.03 and 189.99 is: 262.23
Step by Step Solution
- Step 1: Write the proportion equation
320.99 : 443.03 = 189.99 : x - Step 2: Convert to fraction form
320.99/443.03 = 189.99/x - Step 3: Cross multiply
320.99x = 443.03 × 189.99 - Step 4: Simplify right side
320.99x = 84,170.32 - Step 5: Solve for x
x = 84,170.32/320.99 - Step 6: Final answer
x = 262.23
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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.