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Finding the Fourth Proportional to 650.43, 974.56 and 457.65

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Solution

The fourth proportional to 650.43, 974.56 and 457.65 is: 685.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.43 : 974.56 = 457.65 : x
  2. Step 2: Convert to fraction form
    650.43/974.56 = 457.65/x
  3. Step 3: Cross multiply
    650.43x = 974.56 × 457.65
  4. Step 4: Simplify right side
    650.43x = 446,001.37
  5. Step 5: Solve for x
    x = 446,001.37/650.43
  6. Step 6: Final answer
    x = 685.71

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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.