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Finding the Fourth Proportional to 967.21, 1,334.78 and 574.27

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Solution

The fourth proportional to 967.21, 1,334.78 and 574.27 is: 792.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.21 : 1,334.78 = 574.27 : x
  2. Step 2: Convert to fraction form
    967.21/1,334.78 = 574.27/x
  3. Step 3: Cross multiply
    967.21x = 1,334.78 × 574.27
  4. Step 4: Simplify right side
    967.21x = 766,524.11
  5. Step 5: Solve for x
    x = 766,524.11/967.21
  6. Step 6: Final answer
    x = 792.51

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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.