Finding the Fourth Proportional to 442.70, 664.26 and 278.13
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Solution
The fourth proportional to 442.70, 664.26 and 278.13 is: 417.33
Step by Step Solution
- Step 1: Write the proportion equation
442.70 : 664.26 = 278.13 : x - Step 2: Convert to fraction form
442.70/664.26 = 278.13/x - Step 3: Cross multiply
442.70x = 664.26 × 278.13 - Step 4: Simplify right side
442.70x = 184,750.63 - Step 5: Solve for x
x = 184,750.63/442.70 - Step 6: Final answer
x = 417.33
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.