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Finding the Fourth Proportional to 607.77, 911.93 and 443.39

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Solution

The fourth proportional to 607.77, 911.93 and 443.39 is: 665.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.77 : 911.93 = 443.39 : x
  2. Step 2: Convert to fraction form
    607.77/911.93 = 443.39/x
  3. Step 3: Cross multiply
    607.77x = 911.93 × 443.39
  4. Step 4: Simplify right side
    607.77x = 404,339.00
  5. Step 5: Solve for x
    x = 404,339.00/607.77
  6. Step 6: Final answer
    x = 665.28

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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.