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Finding the Fourth Proportional to 149.29, 206.03 and 112.39

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Solution

The fourth proportional to 149.29, 206.03 and 112.39 is: 155.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.29 : 206.03 = 112.39 : x
  2. Step 2: Convert to fraction form
    149.29/206.03 = 112.39/x
  3. Step 3: Cross multiply
    149.29x = 206.03 × 112.39
  4. Step 4: Simplify right side
    149.29x = 23,155.71
  5. Step 5: Solve for x
    x = 23,155.71/149.29
  6. Step 6: Final answer
    x = 155.11

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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.