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Finding the Fourth Proportional to 489, 673.68 and 341.37

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Solution

The fourth proportional to 489, 673.68 and 341.37 is: 470.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    489 : 673.68 = 341.37 : x
  2. Step 2: Convert to fraction form
    489/673.68 = 341.37/x
  3. Step 3: Cross multiply
    489x = 673.68 × 341.37
  4. Step 4: Simplify right side
    489x = 229,972.43
  5. Step 5: Solve for x
    x = 229,972.43/489
  6. Step 6: Final answer
    x = 470.29

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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.