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Finding the Fourth Proportional to 489.04, 732.60 and 449.68

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Solution

The fourth proportional to 489.04, 732.60 and 449.68 is: 673.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.04 : 732.60 = 449.68 : x
  2. Step 2: Convert to fraction form
    489.04/732.60 = 449.68/x
  3. Step 3: Cross multiply
    489.04x = 732.60 × 449.68
  4. Step 4: Simplify right side
    489.04x = 329,435.57
  5. Step 5: Solve for x
    x = 329,435.57/489.04
  6. Step 6: Final answer
    x = 673.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.