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Finding the Fourth Proportional to 488.21, 673.03 and 348.09

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Solution

The fourth proportional to 488.21, 673.03 and 348.09 is: 479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.21 : 673.03 = 348.09 : x
  2. Step 2: Convert to fraction form
    488.21/673.03 = 348.09/x
  3. Step 3: Cross multiply
    488.21x = 673.03 × 348.09
  4. Step 4: Simplify right side
    488.21x = 234,275.06
  5. Step 5: Solve for x
    x = 234,275.06/488.21
  6. Step 6: Final answer
    x = 479.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.