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Finding the Fourth Proportional to 636.76, 947.52 and 634.60

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Solution

The fourth proportional to 636.76, 947.52 and 634.60 is: 944.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.76 : 947.52 = 634.60 : x
  2. Step 2: Convert to fraction form
    636.76/947.52 = 634.60/x
  3. Step 3: Cross multiply
    636.76x = 947.52 × 634.60
  4. Step 4: Simplify right side
    636.76x = 601,293.02
  5. Step 5: Solve for x
    x = 601,293.02/636.76
  6. Step 6: Final answer
    x = 944.30

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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.