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Finding the Fourth Proportional to 961.07, 1,443.33 and 883.89

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Solution

The fourth proportional to 961.07, 1,443.33 and 883.89 is: 1,327.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.07 : 1,443.33 = 883.89 : x
  2. Step 2: Convert to fraction form
    961.07/1,443.33 = 883.89/x
  3. Step 3: Cross multiply
    961.07x = 1,443.33 × 883.89
  4. Step 4: Simplify right side
    961.07x = 1,275,744.95
  5. Step 5: Solve for x
    x = 1,275,744.95/961.07
  6. Step 6: Final answer
    x = 1,327.43

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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.