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Finding the Fourth Proportional to 529.56, 793.89 and 221.64

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Solution

The fourth proportional to 529.56, 793.89 and 221.64 is: 332.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.56 : 793.89 = 221.64 : x
  2. Step 2: Convert to fraction form
    529.56/793.89 = 221.64/x
  3. Step 3: Cross multiply
    529.56x = 793.89 × 221.64
  4. Step 4: Simplify right side
    529.56x = 175,957.78
  5. Step 5: Solve for x
    x = 175,957.78/529.56
  6. Step 6: Final answer
    x = 332.27

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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.