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Finding the Fourth Proportional to 496, 744.08 and 279.28

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Solution

The fourth proportional to 496, 744.08 and 279.28 is: 418.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    496 : 744.08 = 279.28 : x
  2. Step 2: Convert to fraction form
    496/744.08 = 279.28/x
  3. Step 3: Cross multiply
    496x = 744.08 × 279.28
  4. Step 4: Simplify right side
    496x = 207,806.66
  5. Step 5: Solve for x
    x = 207,806.66/496
  6. Step 6: Final answer
    x = 418.97

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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.