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Finding the Fourth Proportional to 648.45, 967.69 and 579.25

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Solution

The fourth proportional to 648.45, 967.69 and 579.25 is: 864.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.45 : 967.69 = 579.25 : x
  2. Step 2: Convert to fraction form
    648.45/967.69 = 579.25/x
  3. Step 3: Cross multiply
    648.45x = 967.69 × 579.25
  4. Step 4: Simplify right side
    648.45x = 560,530.57
  5. Step 5: Solve for x
    x = 560,530.57/648.45
  6. Step 6: Final answer
    x = 864.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.