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Finding the Fourth Proportional to 539.32, 808.97 and 154.57

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Solution

The fourth proportional to 539.32, 808.97 and 154.57 is: 231.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.32 : 808.97 = 154.57 : x
  2. Step 2: Convert to fraction form
    539.32/808.97 = 154.57/x
  3. Step 3: Cross multiply
    539.32x = 808.97 × 154.57
  4. Step 4: Simplify right side
    539.32x = 125,038.45
  5. Step 5: Solve for x
    x = 125,038.45/539.32
  6. Step 6: Final answer
    x = 231.85

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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.