Finding the Fourth Proportional to 239.70, 358.74 and 212.70
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Solution
The fourth proportional to 239.70, 358.74 and 212.70 is: 318.33
Step by Step Solution
- Step 1: Write the proportion equation
239.70 : 358.74 = 212.70 : x - Step 2: Convert to fraction form
239.70/358.74 = 212.70/x - Step 3: Cross multiply
239.70x = 358.74 × 212.70 - Step 4: Simplify right side
239.70x = 76,304.00 - Step 5: Solve for x
x = 76,304.00/239.70 - Step 6: Final answer
x = 318.33
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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.