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Finding the Fourth Proportional to 944.23, 1,299.20 and 775.56

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Solution

The fourth proportional to 944.23, 1,299.20 and 775.56 is: 1,067.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.23 : 1,299.20 = 775.56 : x
  2. Step 2: Convert to fraction form
    944.23/1,299.20 = 775.56/x
  3. Step 3: Cross multiply
    944.23x = 1,299.20 × 775.56
  4. Step 4: Simplify right side
    944.23x = 1,007,607.55
  5. Step 5: Solve for x
    x = 1,007,607.55/944.23
  6. Step 6: Final answer
    x = 1,067.12

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1.5x scale

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.