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Finding the Fourth Proportional to 851, 1,174.38 and 483

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Solution

The fourth proportional to 851, 1,174.38 and 483 is: 666.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    851 : 1,174.38 = 483 : x
  2. Step 2: Convert to fraction form
    851/1,174.38 = 483/x
  3. Step 3: Cross multiply
    851x = 1,174.38 × 483
  4. Step 4: Simplify right side
    851x = 567,225.54
  5. Step 5: Solve for x
    x = 567,225.54/851
  6. Step 6: Final answer
    x = 666.54

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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.