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Finding the Fourth Proportional to 531.88, 797.82 and 147.12

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Solution

The fourth proportional to 531.88, 797.82 and 147.12 is: 220.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.88 : 797.82 = 147.12 : x
  2. Step 2: Convert to fraction form
    531.88/797.82 = 147.12/x
  3. Step 3: Cross multiply
    531.88x = 797.82 × 147.12
  4. Step 4: Simplify right side
    531.88x = 117,375.28
  5. Step 5: Solve for x
    x = 117,375.28/531.88
  6. Step 6: Final answer
    x = 220.68

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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.