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Finding the Fourth Proportional to 944.28, 1,303.55 and 630.06

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Solution

The fourth proportional to 944.28, 1,303.55 and 630.06 is: 869.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.28 : 1,303.55 = 630.06 : x
  2. Step 2: Convert to fraction form
    944.28/1,303.55 = 630.06/x
  3. Step 3: Cross multiply
    944.28x = 1,303.55 × 630.06
  4. Step 4: Simplify right side
    944.28x = 821,311.56
  5. Step 5: Solve for x
    x = 821,311.56/944.28
  6. Step 6: Final answer
    x = 869.78

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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.