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Finding the Fourth Proportional to 150.26, 207.36 and 100.85

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Solution

The fourth proportional to 150.26, 207.36 and 100.85 is: 139.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.26 : 207.36 = 100.85 : x
  2. Step 2: Convert to fraction form
    150.26/207.36 = 100.85/x
  3. Step 3: Cross multiply
    150.26x = 207.36 × 100.85
  4. Step 4: Simplify right side
    150.26x = 20,911.22
  5. Step 5: Solve for x
    x = 20,911.22/150.26
  6. Step 6: Final answer
    x = 139.17

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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.