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Finding the Fourth Proportional to 531.46, 797.49 and 288.15

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Solution

The fourth proportional to 531.46, 797.49 and 288.15 is: 432.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.46 : 797.49 = 288.15 : x
  2. Step 2: Convert to fraction form
    531.46/797.49 = 288.15/x
  3. Step 3: Cross multiply
    531.46x = 797.49 × 288.15
  4. Step 4: Simplify right side
    531.46x = 229,795.30
  5. Step 5: Solve for x
    x = 229,795.30/531.46
  6. Step 6: Final answer
    x = 432.39

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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.