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Finding the Fourth Proportional to 746.73, 1,030.05 and 484.92

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Solution

The fourth proportional to 746.73, 1,030.05 and 484.92 is: 668.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.73 : 1,030.05 = 484.92 : x
  2. Step 2: Convert to fraction form
    746.73/1,030.05 = 484.92/x
  3. Step 3: Cross multiply
    746.73x = 1,030.05 × 484.92
  4. Step 4: Simplify right side
    746.73x = 499,491.85
  5. Step 5: Solve for x
    x = 499,491.85/746.73
  6. Step 6: Final answer
    x = 668.91

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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.