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Finding the Fourth Proportional to 529.59, 794.42 and 221.39

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Solution

The fourth proportional to 529.59, 794.42 and 221.39 is: 332.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.59 : 794.42 = 221.39 : x
  2. Step 2: Convert to fraction form
    529.59/794.42 = 221.39/x
  3. Step 3: Cross multiply
    529.59x = 794.42 × 221.39
  4. Step 4: Simplify right side
    529.59x = 175,871.56
  5. Step 5: Solve for x
    x = 175,871.56/529.59
  6. Step 6: Final answer
    x = 332.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.