Finding the Fourth Proportional to 67.57, 101.28 and 29.09
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Solution
The fourth proportional to 67.57, 101.28 and 29.09 is: 43.60
Step by Step Solution
- Step 1: Write the proportion equation
67.57 : 101.28 = 29.09 : x - Step 2: Convert to fraction form
67.57/101.28 = 29.09/x - Step 3: Cross multiply
67.57x = 101.28 × 29.09 - Step 4: Simplify right side
67.57x = 2,946.03 - Step 5: Solve for x
x = 2,946.03/67.57 - Step 6: Final answer
x = 43.60
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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.