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Finding the Fourth Proportional to 539.20, 808.20 and 295.90

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Solution

The fourth proportional to 539.20, 808.20 and 295.90 is: 443.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.20 : 808.20 = 295.90 : x
  2. Step 2: Convert to fraction form
    539.20/808.20 = 295.90/x
  3. Step 3: Cross multiply
    539.20x = 808.20 × 295.90
  4. Step 4: Simplify right side
    539.20x = 239,146.38
  5. Step 5: Solve for x
    x = 239,146.38/539.20
  6. Step 6: Final answer
    x = 443.52

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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.