Finding the Fourth Proportional to 261.11, 392.06 and 207.44
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Solution
The fourth proportional to 261.11, 392.06 and 207.44 is: 311.49
Step by Step Solution
- Step 1: Write the proportion equation
261.11 : 392.06 = 207.44 : x - Step 2: Convert to fraction form
261.11/392.06 = 207.44/x - Step 3: Cross multiply
261.11x = 392.06 × 207.44 - Step 4: Simplify right side
261.11x = 81,330.43 - Step 5: Solve for x
x = 81,330.43/261.11 - Step 6: Final answer
x = 311.49
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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.