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Finding the Fourth Proportional to 735.71, 1,100.85 and 443.39

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Solution

The fourth proportional to 735.71, 1,100.85 and 443.39 is: 663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.71 : 1,100.85 = 443.39 : x
  2. Step 2: Convert to fraction form
    735.71/1,100.85 = 443.39/x
  3. Step 3: Cross multiply
    735.71x = 1,100.85 × 443.39
  4. Step 4: Simplify right side
    735.71x = 488,100.38
  5. Step 5: Solve for x
    x = 488,100.38/735.71
  6. Step 6: Final answer
    x = 663.45

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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.