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Finding the Fourth Proportional to 966.21, 1,333.40 and 573.27

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Solution

The fourth proportional to 966.21, 1,333.40 and 573.27 is: 791.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.21 : 1,333.40 = 573.27 : x
  2. Step 2: Convert to fraction form
    966.21/1,333.40 = 573.27/x
  3. Step 3: Cross multiply
    966.21x = 1,333.40 × 573.27
  4. Step 4: Simplify right side
    966.21x = 764,395.35
  5. Step 5: Solve for x
    x = 764,395.35/966.21
  6. Step 6: Final answer
    x = 791.13

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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.