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Finding the Fourth Proportional to 324.60, 484.83 and 279.12

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Solution

The fourth proportional to 324.60, 484.83 and 279.12 is: 416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.60 : 484.83 = 279.12 : x
  2. Step 2: Convert to fraction form
    324.60/484.83 = 279.12/x
  3. Step 3: Cross multiply
    324.60x = 484.83 × 279.12
  4. Step 4: Simplify right side
    324.60x = 135,325.75
  5. Step 5: Solve for x
    x = 135,325.75/324.60
  6. Step 6: Final answer
    x = 416.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.