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Finding the Fourth Proportional to 451.06, 676.61 and 443.39

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Solution

The fourth proportional to 451.06, 676.61 and 443.39 is: 665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.06 : 676.61 = 443.39 : x
  2. Step 2: Convert to fraction form
    451.06/676.61 = 443.39/x
  3. Step 3: Cross multiply
    451.06x = 676.61 × 443.39
  4. Step 4: Simplify right side
    451.06x = 299,996.51
  5. Step 5: Solve for x
    x = 299,996.51/451.06
  6. Step 6: Final answer
    x = 665.10

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Double scale
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Similar ratio
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1.5x scale

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.