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Finding the Fourth Proportional to 534.23, 801.81 and 287.63

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Solution

The fourth proportional to 534.23, 801.81 and 287.63 is: 431.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.23 : 801.81 = 287.63 : x
  2. Step 2: Convert to fraction form
    534.23/801.81 = 287.63/x
  3. Step 3: Cross multiply
    534.23x = 801.81 × 287.63
  4. Step 4: Simplify right side
    534.23x = 230,620.60
  5. Step 5: Solve for x
    x = 230,620.60/534.23
  6. Step 6: Final answer
    x = 431.69

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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.