Finding the Fourth Proportional to 67.79, 101.58 and 40.28
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Solution
The fourth proportional to 67.79, 101.58 and 40.28 is: 60.35
Step by Step Solution
- Step 1: Write the proportion equation
67.79 : 101.58 = 40.28 : x - Step 2: Convert to fraction form
67.79/101.58 = 40.28/x - Step 3: Cross multiply
67.79x = 101.58 × 40.28 - Step 4: Simplify right side
67.79x = 4,091.13 - Step 5: Solve for x
x = 4,091.13/67.79 - Step 6: Final answer
x = 60.35
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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.