Finding the Fourth Proportional to 261.36, 392.04 and 68.99
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Solution
The fourth proportional to 261.36, 392.04 and 68.99 is: 103.48
Step by Step Solution
- Step 1: Write the proportion equation
261.36 : 392.04 = 68.99 : x - Step 2: Convert to fraction form
261.36/392.04 = 68.99/x - Step 3: Cross multiply
261.36x = 392.04 × 68.99 - Step 4: Simplify right side
261.36x = 27,044.88 - Step 5: Solve for x
x = 27,044.88/261.36 - Step 6: Final answer
x = 103.48
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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.