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Finding the Fourth Proportional to 531.12, 797.04 and 287.58

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Solution

The fourth proportional to 531.12, 797.04 and 287.58 is: 431.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.12 : 797.04 = 287.58 : x
  2. Step 2: Convert to fraction form
    531.12/797.04 = 287.58/x
  3. Step 3: Cross multiply
    531.12x = 797.04 × 287.58
  4. Step 4: Simplify right side
    531.12x = 229,212.76
  5. Step 5: Solve for x
    x = 229,212.76/531.12
  6. Step 6: Final answer
    x = 431.56

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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.