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Finding the Fourth Proportional to 1,722.76, 2,584.19 and 626.52

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Solution

The fourth proportional to 1,722.76, 2,584.19 and 626.52 is: 939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.76 : 2,584.19 = 626.52 : x
  2. Step 2: Convert to fraction form
    1,722.76/2,584.19 = 626.52/x
  3. Step 3: Cross multiply
    1,722.76x = 2,584.19 × 626.52
  4. Step 4: Simplify right side
    1,722.76x = 1,619,046.72
  5. Step 5: Solve for x
    x = 1,619,046.72/1,722.76
  6. Step 6: Final answer
    x = 939.80

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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.