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Finding the Fourth Proportional to 1,446.39, 2,169.34 and 472.49

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Solution

The fourth proportional to 1,446.39, 2,169.34 and 472.49 is: 708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.39 : 2,169.34 = 472.49 : x
  2. Step 2: Convert to fraction form
    1,446.39/2,169.34 = 472.49/x
  3. Step 3: Cross multiply
    1,446.39x = 2,169.34 × 472.49
  4. Step 4: Simplify right side
    1,446.39x = 1,024,987.56
  5. Step 5: Solve for x
    x = 1,024,987.56/1,446.39
  6. Step 6: Final answer
    x = 708.65

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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.