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Finding the Fourth Proportional to 607.63, 911.60 and 443.02

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Solution

The fourth proportional to 607.63, 911.60 and 443.02 is: 664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.63 : 911.60 = 443.02 : x
  2. Step 2: Convert to fraction form
    607.63/911.60 = 443.02/x
  3. Step 3: Cross multiply
    607.63x = 911.60 × 443.02
  4. Step 4: Simplify right side
    607.63x = 403,850.26
  5. Step 5: Solve for x
    x = 403,850.26/607.63
  6. Step 6: Final answer
    x = 664.64

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Double scale
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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.