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Finding the Fourth Proportional to 748.35, 1,033.20 and 482.90

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Solution

The fourth proportional to 748.35, 1,033.20 and 482.90 is: 666.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.35 : 1,033.20 = 482.90 : x
  2. Step 2: Convert to fraction form
    748.35/1,033.20 = 482.90/x
  3. Step 3: Cross multiply
    748.35x = 1,033.20 × 482.90
  4. Step 4: Simplify right side
    748.35x = 498,932.28
  5. Step 5: Solve for x
    x = 498,932.28/748.35
  6. Step 6: Final answer
    x = 666.71

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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.