Finding the Fourth Proportional to 261.91, 392.25 and 207.84
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Solution
The fourth proportional to 261.91, 392.25 and 207.84 is: 311.27
Step by Step Solution
- Step 1: Write the proportion equation
261.91 : 392.25 = 207.84 : x - Step 2: Convert to fraction form
261.91/392.25 = 207.84/x - Step 3: Cross multiply
261.91x = 392.25 × 207.84 - Step 4: Simplify right side
261.91x = 81,525.24 - Step 5: Solve for x
x = 81,525.24/261.91 - Step 6: Final answer
x = 311.27
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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.