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Finding the Fourth Proportional to 488.00, 673.02 and 439.40

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Solution

The fourth proportional to 488.00, 673.02 and 439.40 is: 605.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.00 : 673.02 = 439.40 : x
  2. Step 2: Convert to fraction form
    488.00/673.02 = 439.40/x
  3. Step 3: Cross multiply
    488.00x = 673.02 × 439.40
  4. Step 4: Simplify right side
    488.00x = 295,721.62
  5. Step 5: Solve for x
    x = 295,721.62/488.00
  6. Step 6: Final answer
    x = 605.99

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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.