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Finding the Fourth Proportional to 1,348.91, 2,023.37 and 424.55

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Solution

The fourth proportional to 1,348.91, 2,023.37 and 424.55 is: 636.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.91 : 2,023.37 = 424.55 : x
  2. Step 2: Convert to fraction form
    1,348.91/2,023.37 = 424.55/x
  3. Step 3: Cross multiply
    1,348.91x = 2,023.37 × 424.55
  4. Step 4: Simplify right side
    1,348.91x = 859,012.68
  5. Step 5: Solve for x
    x = 859,012.68/1,348.91
  6. Step 6: Final answer
    x = 636.82

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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.