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Finding the Fourth Proportional to 650.88, 976.55 and 285.62

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Solution

The fourth proportional to 650.88, 976.55 and 285.62 is: 428.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.88 : 976.55 = 285.62 : x
  2. Step 2: Convert to fraction form
    650.88/976.55 = 285.62/x
  3. Step 3: Cross multiply
    650.88x = 976.55 × 285.62
  4. Step 4: Simplify right side
    650.88x = 278,924.83
  5. Step 5: Solve for x
    x = 278,924.83/650.88
  6. Step 6: Final answer
    x = 428.53

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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.