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Finding the Fourth Proportional to 2,171.55, 3,257.33 and 528.09

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Solution

The fourth proportional to 2,171.55, 3,257.33 and 528.09 is: 792.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.55 : 3,257.33 = 528.09 : x
  2. Step 2: Convert to fraction form
    2,171.55/3,257.33 = 528.09/x
  3. Step 3: Cross multiply
    2,171.55x = 3,257.33 × 528.09
  4. Step 4: Simplify right side
    2,171.55x = 1,720,176.77
  5. Step 5: Solve for x
    x = 1,720,176.77/2,171.55
  6. Step 6: Final answer
    x = 792.14

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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.