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Finding the Fourth Proportional to 360.14, 539.80 and 154.40

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Solution

The fourth proportional to 360.14, 539.80 and 154.40 is: 231.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.14 : 539.80 = 154.40 : x
  2. Step 2: Convert to fraction form
    360.14/539.80 = 154.40/x
  3. Step 3: Cross multiply
    360.14x = 539.80 × 154.40
  4. Step 4: Simplify right side
    360.14x = 83,345.12
  5. Step 5: Solve for x
    x = 83,345.12/360.14
  6. Step 6: Final answer
    x = 231.42

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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.