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Finding the Fourth Proportional to 441.69, 662.64 and 279.51

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Solution

The fourth proportional to 441.69, 662.64 and 279.51 is: 419.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.69 : 662.64 = 279.51 : x
  2. Step 2: Convert to fraction form
    441.69/662.64 = 279.51/x
  3. Step 3: Cross multiply
    441.69x = 662.64 × 279.51
  4. Step 4: Simplify right side
    441.69x = 185,214.51
  5. Step 5: Solve for x
    x = 185,214.51/441.69
  6. Step 6: Final answer
    x = 419.33

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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.