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Finding the Fourth Proportional to 1,446.43, 2,169.90 and 472.36

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Solution

The fourth proportional to 1,446.43, 2,169.90 and 472.36 is: 708.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.43 : 2,169.90 = 472.36 : x
  2. Step 2: Convert to fraction form
    1,446.43/2,169.90 = 472.36/x
  3. Step 3: Cross multiply
    1,446.43x = 2,169.90 × 472.36
  4. Step 4: Simplify right side
    1,446.43x = 1,024,973.96
  5. Step 5: Solve for x
    x = 1,024,973.96/1,446.43
  6. Step 6: Final answer
    x = 708.62

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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.