Finding the Fourth Proportional to 67.44, 93.12 and 54.31
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Solution
The fourth proportional to 67.44, 93.12 and 54.31 is: 74.99
Step by Step Solution
- Step 1: Write the proportion equation
67.44 : 93.12 = 54.31 : x - Step 2: Convert to fraction form
67.44/93.12 = 54.31/x - Step 3: Cross multiply
67.44x = 93.12 × 54.31 - Step 4: Simplify right side
67.44x = 5,057.35 - Step 5: Solve for x
x = 5,057.35/67.44 - Step 6: Final answer
x = 74.99
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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.