Finding the Fourth Proportional to 392.91, 589.44 and 161.68
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Solution
The fourth proportional to 392.91, 589.44 and 161.68 is: 242.54
Step by Step Solution
- Step 1: Write the proportion equation
392.91 : 589.44 = 161.68 : x - Step 2: Convert to fraction form
392.91/589.44 = 161.68/x - Step 3: Cross multiply
392.91x = 589.44 × 161.68 - Step 4: Simplify right side
392.91x = 95,298.10 - Step 5: Solve for x
x = 95,298.10/392.91 - Step 6: Final answer
x = 242.54
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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.