Finding the Fourth Proportional to 392.55, 589.14 and 161.58
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Solution
The fourth proportional to 392.55, 589.14 and 161.58 is: 242.50
Step by Step Solution
- Step 1: Write the proportion equation
392.55 : 589.14 = 161.58 : x - Step 2: Convert to fraction form
392.55/589.14 = 161.58/x - Step 3: Cross multiply
392.55x = 589.14 × 161.58 - Step 4: Simplify right side
392.55x = 95,193.24 - Step 5: Solve for x
x = 95,193.24/392.55 - Step 6: Final answer
x = 242.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.