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Finding the Fourth Proportional to 484.94, 673.72 and 479.18

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Solution

The fourth proportional to 484.94, 673.72 and 479.18 is: 665.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.94 : 673.72 = 479.18 : x
  2. Step 2: Convert to fraction form
    484.94/673.72 = 479.18/x
  3. Step 3: Cross multiply
    484.94x = 673.72 × 479.18
  4. Step 4: Simplify right side
    484.94x = 322,833.15
  5. Step 5: Solve for x
    x = 322,833.15/484.94
  6. Step 6: Final answer
    x = 665.72

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.