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Finding the Fourth Proportional to 529.14, 793.92 and 285.60

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Solution

The fourth proportional to 529.14, 793.92 and 285.60 is: 428.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.14 : 793.92 = 285.60 : x
  2. Step 2: Convert to fraction form
    529.14/793.92 = 285.60/x
  3. Step 3: Cross multiply
    529.14x = 793.92 × 285.60
  4. Step 4: Simplify right side
    529.14x = 226,743.55
  5. Step 5: Solve for x
    x = 226,743.55/529.14
  6. Step 6: Final answer
    x = 428.51

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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.