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Finding the Fourth Proportional to 451.35, 673.47 and 405.36

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Solution

The fourth proportional to 451.35, 673.47 and 405.36 is: 604.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.35 : 673.47 = 405.36 : x
  2. Step 2: Convert to fraction form
    451.35/673.47 = 405.36/x
  3. Step 3: Cross multiply
    451.35x = 673.47 × 405.36
  4. Step 4: Simplify right side
    451.35x = 272,997.80
  5. Step 5: Solve for x
    x = 272,997.80/451.35
  6. Step 6: Final answer
    x = 604.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.