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Finding the Fourth Proportional to 634.56, 948 and 630.96

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Solution

The fourth proportional to 634.56, 948 and 630.96 is: 942.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.56 : 948 = 630.96 : x
  2. Step 2: Convert to fraction form
    634.56/948 = 630.96/x
  3. Step 3: Cross multiply
    634.56x = 948 × 630.96
  4. Step 4: Simplify right side
    634.56x = 598,150.08
  5. Step 5: Solve for x
    x = 598,150.08/634.56
  6. Step 6: Final answer
    x = 942.62

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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.