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Finding the Fourth Proportional to 531.96, 797.91 and 219.57

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Solution

The fourth proportional to 531.96, 797.91 and 219.57 is: 329.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.96 : 797.91 = 219.57 : x
  2. Step 2: Convert to fraction form
    531.96/797.91 = 219.57/x
  3. Step 3: Cross multiply
    531.96x = 797.91 × 219.57
  4. Step 4: Simplify right side
    531.96x = 175,197.10
  5. Step 5: Solve for x
    x = 175,197.10/531.96
  6. Step 6: Final answer
    x = 329.34

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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.