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Finding the Fourth Proportional to 652.10, 978.17 and 327.29

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Solution

The fourth proportional to 652.10, 978.17 and 327.29 is: 490.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.10 : 978.17 = 327.29 : x
  2. Step 2: Convert to fraction form
    652.10/978.17 = 327.29/x
  3. Step 3: Cross multiply
    652.10x = 978.17 × 327.29
  4. Step 4: Simplify right side
    652.10x = 320,138.73
  5. Step 5: Solve for x
    x = 320,138.73/652.10
  6. Step 6: Final answer
    x = 490.94

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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.