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Finding the Fourth Proportional to 425.04, 638.04 and 403.44

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Solution

The fourth proportional to 425.04, 638.04 and 403.44 is: 605.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.04 : 638.04 = 403.44 : x
  2. Step 2: Convert to fraction form
    425.04/638.04 = 403.44/x
  3. Step 3: Cross multiply
    425.04x = 638.04 × 403.44
  4. Step 4: Simplify right side
    425.04x = 257,410.86
  5. Step 5: Solve for x
    x = 257,410.86/425.04
  6. Step 6: Final answer
    x = 605.62

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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.