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Finding the Fourth Proportional to 648.39, 967.56 and 579.16

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Solution

The fourth proportional to 648.39, 967.56 and 579.16 is: 864.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.39 : 967.56 = 579.16 : x
  2. Step 2: Convert to fraction form
    648.39/967.56 = 579.16/x
  3. Step 3: Cross multiply
    648.39x = 967.56 × 579.16
  4. Step 4: Simplify right side
    648.39x = 560,372.05
  5. Step 5: Solve for x
    x = 560,372.05/648.39
  6. Step 6: Final answer
    x = 864.25

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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.