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Finding the Fourth Proportional to 744.41, 1,027.28 and 482.88

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Solution

The fourth proportional to 744.41, 1,027.28 and 482.88 is: 666.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.41 : 1,027.28 = 482.88 : x
  2. Step 2: Convert to fraction form
    744.41/1,027.28 = 482.88/x
  3. Step 3: Cross multiply
    744.41x = 1,027.28 × 482.88
  4. Step 4: Simplify right side
    744.41x = 496,052.25
  5. Step 5: Solve for x
    x = 496,052.25/744.41
  6. Step 6: Final answer
    x = 666.37

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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.