Finding the Fourth Proportional to 67.98, 93.79 and 43.42
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Solution
The fourth proportional to 67.98, 93.79 and 43.42 is: 59.90
Step by Step Solution
- Step 1: Write the proportion equation
67.98 : 93.79 = 43.42 : x - Step 2: Convert to fraction form
67.98/93.79 = 43.42/x - Step 3: Cross multiply
67.98x = 93.79 × 43.42 - Step 4: Simplify right side
67.98x = 4,072.13 - Step 5: Solve for x
x = 4,072.13/67.98 - Step 6: Final answer
x = 59.90
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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.