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Finding the Fourth Proportional to 531.15, 796.95 and 287.84

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Solution

The fourth proportional to 531.15, 796.95 and 287.84 is: 431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.15 : 796.95 = 287.84 : x
  2. Step 2: Convert to fraction form
    531.15/796.95 = 287.84/x
  3. Step 3: Cross multiply
    531.15x = 796.95 × 287.84
  4. Step 4: Simplify right side
    531.15x = 229,394.09
  5. Step 5: Solve for x
    x = 229,394.09/531.15
  6. Step 6: Final answer
    x = 431.88

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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.