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Finding the Fourth Proportional to 515.63, 769.13 and 483.33

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Solution

The fourth proportional to 515.63, 769.13 and 483.33 is: 720.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.63 : 769.13 = 483.33 : x
  2. Step 2: Convert to fraction form
    515.63/769.13 = 483.33/x
  3. Step 3: Cross multiply
    515.63x = 769.13 × 483.33
  4. Step 4: Simplify right side
    515.63x = 371,744.68
  5. Step 5: Solve for x
    x = 371,744.68/515.63
  6. Step 6: Final answer
    x = 720.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.