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Finding the Fourth Proportional to 664.03, 993.72 and 533.71

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Solution

The fourth proportional to 664.03, 993.72 and 533.71 is: 798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.03 : 993.72 = 533.71 : x
  2. Step 2: Convert to fraction form
    664.03/993.72 = 533.71/x
  3. Step 3: Cross multiply
    664.03x = 993.72 × 533.71
  4. Step 4: Simplify right side
    664.03x = 530,358.30
  5. Step 5: Solve for x
    x = 530,358.30/664.03
  6. Step 6: Final answer
    x = 798.70

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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.