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Finding the Fourth Proportional to 489.24, 733.84 and 272.68

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Solution

The fourth proportional to 489.24, 733.84 and 272.68 is: 409.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.24 : 733.84 = 272.68 : x
  2. Step 2: Convert to fraction form
    489.24/733.84 = 272.68/x
  3. Step 3: Cross multiply
    489.24x = 733.84 × 272.68
  4. Step 4: Simplify right side
    489.24x = 200,103.49
  5. Step 5: Solve for x
    x = 200,103.49/489.24
  6. Step 6: Final answer
    x = 409.01

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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.