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Finding the Fourth Proportional to 944.82, 1,303.62 and 629.70

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Solution

The fourth proportional to 944.82, 1,303.62 and 629.70 is: 868.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.82 : 1,303.62 = 629.70 : x
  2. Step 2: Convert to fraction form
    944.82/1,303.62 = 629.70/x
  3. Step 3: Cross multiply
    944.82x = 1,303.62 × 629.70
  4. Step 4: Simplify right side
    944.82x = 820,889.51
  5. Step 5: Solve for x
    x = 820,889.51/944.82
  6. Step 6: Final answer
    x = 868.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.