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Finding the Fourth Proportional to 150.41, 207.55 and 101.20

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Solution

The fourth proportional to 150.41, 207.55 and 101.20 is: 139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.41 : 207.55 = 101.20 : x
  2. Step 2: Convert to fraction form
    150.41/207.55 = 101.20/x
  3. Step 3: Cross multiply
    150.41x = 207.55 × 101.20
  4. Step 4: Simplify right side
    150.41x = 21,004.06
  5. Step 5: Solve for x
    x = 21,004.06/150.41
  6. Step 6: Final answer
    x = 139.65

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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.