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Finding the Fourth Proportional to 539.06, 808.60 and 154.31

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Solution

The fourth proportional to 539.06, 808.60 and 154.31 is: 231.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.06 : 808.60 = 154.31 : x
  2. Step 2: Convert to fraction form
    539.06/808.60 = 154.31/x
  3. Step 3: Cross multiply
    539.06x = 808.60 × 154.31
  4. Step 4: Simplify right side
    539.06x = 124,776.70
  5. Step 5: Solve for x
    x = 124,776.70/539.06
  6. Step 6: Final answer
    x = 231.47

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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.