Finding the Fourth Proportional to 239.18, 358.68 and 130.91
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Solution
The fourth proportional to 239.18, 358.68 and 130.91 is: 196.32
Step by Step Solution
- Step 1: Write the proportion equation
239.18 : 358.68 = 130.91 : x - Step 2: Convert to fraction form
239.18/358.68 = 130.91/x - Step 3: Cross multiply
239.18x = 358.68 × 130.91 - Step 4: Simplify right side
239.18x = 46,954.80 - Step 5: Solve for x
x = 46,954.80/239.18 - Step 6: Final answer
x = 196.32
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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.