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Finding the Fourth Proportional to 150.41, 207.11 and 139.52

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Solution

The fourth proportional to 150.41, 207.11 and 139.52 is: 192.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.41 : 207.11 = 139.52 : x
  2. Step 2: Convert to fraction form
    150.41/207.11 = 139.52/x
  3. Step 3: Cross multiply
    150.41x = 207.11 × 139.52
  4. Step 4: Simplify right side
    150.41x = 28,895.30
  5. Step 5: Solve for x
    x = 28,895.30/150.41
  6. Step 6: Final answer
    x = 192.12

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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.