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Finding the Fourth Proportional to 650.47, 975.72 and 285.25

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Solution

The fourth proportional to 650.47, 975.72 and 285.25 is: 427.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.47 : 975.72 = 285.25 : x
  2. Step 2: Convert to fraction form
    650.47/975.72 = 285.25/x
  3. Step 3: Cross multiply
    650.47x = 975.72 × 285.25
  4. Step 4: Simplify right side
    650.47x = 278,324.13
  5. Step 5: Solve for x
    x = 278,324.13/650.47
  6. Step 6: Final answer
    x = 427.88

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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.