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Finding the Fourth Proportional to 539.12, 808.68 and 154.37

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Solution

The fourth proportional to 539.12, 808.68 and 154.37 is: 231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.12 : 808.68 = 154.37 : x
  2. Step 2: Convert to fraction form
    539.12/808.68 = 154.37/x
  3. Step 3: Cross multiply
    539.12x = 808.68 × 154.37
  4. Step 4: Simplify right side
    539.12x = 124,835.93
  5. Step 5: Solve for x
    x = 124,835.93/539.12
  6. Step 6: Final answer
    x = 231.56

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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.