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Finding the Fourth Proportional to 650.92, 976.36 and 285.60

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Solution

The fourth proportional to 650.92, 976.36 and 285.60 is: 428.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.92 : 976.36 = 285.60 : x
  2. Step 2: Convert to fraction form
    650.92/976.36 = 285.60/x
  3. Step 3: Cross multiply
    650.92x = 976.36 × 285.60
  4. Step 4: Simplify right side
    650.92x = 278,848.42
  5. Step 5: Solve for x
    x = 278,848.42/650.92
  6. Step 6: Final answer
    x = 428.39

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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.