Finding the Fourth Proportional to 239.30, 329.70 and 207.91
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Solution
The fourth proportional to 239.30, 329.70 and 207.91 is: 286.45
Step by Step Solution
- Step 1: Write the proportion equation
239.30 : 329.70 = 207.91 : x - Step 2: Convert to fraction form
239.30/329.70 = 207.91/x - Step 3: Cross multiply
239.30x = 329.70 × 207.91 - Step 4: Simplify right side
239.30x = 68,547.93 - Step 5: Solve for x
x = 68,547.93/239.30 - Step 6: Final answer
x = 286.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.