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Finding the Fourth Proportional to 626.20, 939.02 and 482.02

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Solution

The fourth proportional to 626.20, 939.02 and 482.02 is: 722.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.20 : 939.02 = 482.02 : x
  2. Step 2: Convert to fraction form
    626.20/939.02 = 482.02/x
  3. Step 3: Cross multiply
    626.20x = 939.02 × 482.02
  4. Step 4: Simplify right side
    626.20x = 452,626.42
  5. Step 5: Solve for x
    x = 452,626.42/626.20
  6. Step 6: Final answer
    x = 722.81

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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.