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Finding the Fourth Proportional to 628.29, 867.48 and 471.27

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Solution

The fourth proportional to 628.29, 867.48 and 471.27 is: 650.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.29 : 867.48 = 471.27 : x
  2. Step 2: Convert to fraction form
    628.29/867.48 = 471.27/x
  3. Step 3: Cross multiply
    628.29x = 867.48 × 471.27
  4. Step 4: Simplify right side
    628.29x = 408,817.30
  5. Step 5: Solve for x
    x = 408,817.30/628.29
  6. Step 6: Final answer
    x = 650.68

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.