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Finding the Fourth Proportional to 529.21, 793.42 and 220.62

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Solution

The fourth proportional to 529.21, 793.42 and 220.62 is: 330.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.21 : 793.42 = 220.62 : x
  2. Step 2: Convert to fraction form
    529.21/793.42 = 220.62/x
  3. Step 3: Cross multiply
    529.21x = 793.42 × 220.62
  4. Step 4: Simplify right side
    529.21x = 175,047.36
  5. Step 5: Solve for x
    x = 175,047.36/529.21
  6. Step 6: Final answer
    x = 330.77

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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.