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Finding the Fourth Proportional to 746.04, 1,030.38 and 628.44

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Solution

The fourth proportional to 746.04, 1,030.38 and 628.44 is: 867.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.04 : 1,030.38 = 628.44 : x
  2. Step 2: Convert to fraction form
    746.04/1,030.38 = 628.44/x
  3. Step 3: Cross multiply
    746.04x = 1,030.38 × 628.44
  4. Step 4: Simplify right side
    746.04x = 647,532.01
  5. Step 5: Solve for x
    x = 647,532.01/746.04
  6. Step 6: Final answer
    x = 867.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.