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Finding the Fourth Proportional to 150.03, 206.99 and 138.39

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Solution

The fourth proportional to 150.03, 206.99 and 138.39 is: 190.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.03 : 206.99 = 138.39 : x
  2. Step 2: Convert to fraction form
    150.03/206.99 = 138.39/x
  3. Step 3: Cross multiply
    150.03x = 206.99 × 138.39
  4. Step 4: Simplify right side
    150.03x = 28,645.35
  5. Step 5: Solve for x
    x = 28,645.35/150.03
  6. Step 6: Final answer
    x = 190.93

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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.