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Finding the Fourth Proportional to 673.20, 928.74 and 424.44

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Solution

The fourth proportional to 673.20, 928.74 and 424.44 is: 585.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.20 : 928.74 = 424.44 : x
  2. Step 2: Convert to fraction form
    673.20/928.74 = 424.44/x
  3. Step 3: Cross multiply
    673.20x = 928.74 × 424.44
  4. Step 4: Simplify right side
    673.20x = 394,194.41
  5. Step 5: Solve for x
    x = 394,194.41/673.20
  6. Step 6: Final answer
    x = 585.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.