Finding the Fourth Proportional to 239.14, 358.74 and 102.21
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Solution
The fourth proportional to 239.14, 358.74 and 102.21 is: 153.33
Step by Step Solution
- Step 1: Write the proportion equation
239.14 : 358.74 = 102.21 : x - Step 2: Convert to fraction form
239.14/358.74 = 102.21/x - Step 3: Cross multiply
239.14x = 358.74 × 102.21 - Step 4: Simplify right side
239.14x = 36,666.82 - Step 5: Solve for x
x = 36,666.82/239.14 - Step 6: Final answer
x = 153.33
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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.