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Finding the Fourth Proportional to 150.03, 207.18 and 100.89

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Solution

The fourth proportional to 150.03, 207.18 and 100.89 is: 139.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.03 : 207.18 = 100.89 : x
  2. Step 2: Convert to fraction form
    150.03/207.18 = 100.89/x
  3. Step 3: Cross multiply
    150.03x = 207.18 × 100.89
  4. Step 4: Simplify right side
    150.03x = 20,902.39
  5. Step 5: Solve for x
    x = 20,902.39/150.03
  6. Step 6: Final answer
    x = 139.32

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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.