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Finding the Fourth Proportional to 748.97, 1,124.10 and 383.96

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Solution

The fourth proportional to 748.97, 1,124.10 and 383.96 is: 576.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.97 : 1,124.10 = 383.96 : x
  2. Step 2: Convert to fraction form
    748.97/1,124.10 = 383.96/x
  3. Step 3: Cross multiply
    748.97x = 1,124.10 × 383.96
  4. Step 4: Simplify right side
    748.97x = 431,603.82
  5. Step 5: Solve for x
    x = 431,603.82/748.97
  6. Step 6: Final answer
    x = 576.27

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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.