Finding the Fourth Proportional to 278.44, 417.68 and 201.28
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Solution
The fourth proportional to 278.44, 417.68 and 201.28 is: 301.93
Step by Step Solution
- Step 1: Write the proportion equation
278.44 : 417.68 = 201.28 : x - Step 2: Convert to fraction form
278.44/417.68 = 201.28/x - Step 3: Cross multiply
278.44x = 417.68 × 201.28 - Step 4: Simplify right side
278.44x = 84,070.63 - Step 5: Solve for x
x = 84,070.63/278.44 - Step 6: Final answer
x = 301.93
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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.