Finding the Fourth Proportional to 393.08, 589.70 and 119.18
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Solution
The fourth proportional to 393.08, 589.70 and 119.18 is: 178.79
Step by Step Solution
- Step 1: Write the proportion equation
393.08 : 589.70 = 119.18 : x - Step 2: Convert to fraction form
393.08/589.70 = 119.18/x - Step 3: Cross multiply
393.08x = 589.70 × 119.18 - Step 4: Simplify right side
393.08x = 70,276.90 - Step 5: Solve for x
x = 70,276.90/393.08 - Step 6: Final answer
x = 178.79
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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.