Finding the Fourth Proportional to 278.98, 418.44 and 207.28
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Solution
The fourth proportional to 278.98, 418.44 and 207.28 is: 310.90
Step by Step Solution
- Step 1: Write the proportion equation
278.98 : 418.44 = 207.28 : x - Step 2: Convert to fraction form
278.98/418.44 = 207.28/x - Step 3: Cross multiply
278.98x = 418.44 × 207.28 - Step 4: Simplify right side
278.98x = 86,734.24 - Step 5: Solve for x
x = 86,734.24/278.98 - Step 6: Final answer
x = 310.90
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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.