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Finding the Fourth Proportional to 1,348.38, 2,022.91 and 423.90

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Solution

The fourth proportional to 1,348.38, 2,022.91 and 423.90 is: 635.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.38 : 2,022.91 = 423.90 : x
  2. Step 2: Convert to fraction form
    1,348.38/2,022.91 = 423.90/x
  3. Step 3: Cross multiply
    1,348.38x = 2,022.91 × 423.90
  4. Step 4: Simplify right side
    1,348.38x = 857,510.49
  5. Step 5: Solve for x
    x = 857,510.49/1,348.38
  6. Step 6: Final answer
    x = 635.96

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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.