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Finding the Fourth Proportional to 531.97, 797.80 and 185.22

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Solution

The fourth proportional to 531.97, 797.80 and 185.22 is: 277.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.97 : 797.80 = 185.22 : x
  2. Step 2: Convert to fraction form
    531.97/797.80 = 185.22/x
  3. Step 3: Cross multiply
    531.97x = 797.80 × 185.22
  4. Step 4: Simplify right side
    531.97x = 147,768.52
  5. Step 5: Solve for x
    x = 147,768.52/531.97
  6. Step 6: Final answer
    x = 277.78

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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.