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Finding the Fourth Proportional to 1,734.04, 2,600.76 and 638.44

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Solution

The fourth proportional to 1,734.04, 2,600.76 and 638.44 is: 957.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,734.04 : 2,600.76 = 638.44 : x
  2. Step 2: Convert to fraction form
    1,734.04/2,600.76 = 638.44/x
  3. Step 3: Cross multiply
    1,734.04x = 2,600.76 × 638.44
  4. Step 4: Simplify right side
    1,734.04x = 1,660,429.21
  5. Step 5: Solve for x
    x = 1,660,429.21/1,734.04
  6. Step 6: Final answer
    x = 957.55

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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.