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Finding the Fourth Proportional to 534.61, 801.44 and 287.95

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Solution

The fourth proportional to 534.61, 801.44 and 287.95 is: 431.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.61 : 801.44 = 287.95 : x
  2. Step 2: Convert to fraction form
    534.61/801.44 = 287.95/x
  3. Step 3: Cross multiply
    534.61x = 801.44 × 287.95
  4. Step 4: Simplify right side
    534.61x = 230,769.20
  5. Step 5: Solve for x
    x = 230,769.20/534.61
  6. Step 6: Final answer
    x = 431.66

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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.