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Finding the Fourth Proportional to 652.82, 979.23 and 220.28

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Solution

The fourth proportional to 652.82, 979.23 and 220.28 is: 330.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.82 : 979.23 = 220.28 : x
  2. Step 2: Convert to fraction form
    652.82/979.23 = 220.28/x
  3. Step 3: Cross multiply
    652.82x = 979.23 × 220.28
  4. Step 4: Simplify right side
    652.82x = 215,706.22
  5. Step 5: Solve for x
    x = 215,706.22/652.82
  6. Step 6: Final answer
    x = 330.42

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Double scale
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Similar ratio
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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.