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Finding the Fourth Proportional to 150.14, 207.09 and 103.55

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Solution

The fourth proportional to 150.14, 207.09 and 103.55 is: 142.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.14 : 207.09 = 103.55 : x
  2. Step 2: Convert to fraction form
    150.14/207.09 = 103.55/x
  3. Step 3: Cross multiply
    150.14x = 207.09 × 103.55
  4. Step 4: Simplify right side
    150.14x = 21,444.17
  5. Step 5: Solve for x
    x = 21,444.17/150.14
  6. Step 6: Final answer
    x = 142.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.