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Finding the Fourth Proportional to 1,032.56, 1,546.46 and 620.79

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Solution

The fourth proportional to 1,032.56, 1,546.46 and 620.79 is: 929.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,032.56 : 1,546.46 = 620.79 : x
  2. Step 2: Convert to fraction form
    1,032.56/1,546.46 = 620.79/x
  3. Step 3: Cross multiply
    1,032.56x = 1,546.46 × 620.79
  4. Step 4: Simplify right side
    1,032.56x = 960,021.87
  5. Step 5: Solve for x
    x = 960,021.87/1,032.56
  6. Step 6: Final answer
    x = 929.75

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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.