Finding the Fourth Proportional to 189.99, 284.91 and 68.21
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Solution
The fourth proportional to 189.99, 284.91 and 68.21 is: 102.29
Step by Step Solution
- Step 1: Write the proportion equation
189.99 : 284.91 = 68.21 : x - Step 2: Convert to fraction form
189.99/284.91 = 68.21/x - Step 3: Cross multiply
189.99x = 284.91 × 68.21 - Step 4: Simplify right side
189.99x = 19,433.71 - Step 5: Solve for x
x = 19,433.71/189.99 - Step 6: Final answer
x = 102.29
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.