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Finding the Fourth Proportional to 149.01, 222.43 and 130.78

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Solution

The fourth proportional to 149.01, 222.43 and 130.78 is: 195.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.01 : 222.43 = 130.78 : x
  2. Step 2: Convert to fraction form
    149.01/222.43 = 130.78/x
  3. Step 3: Cross multiply
    149.01x = 222.43 × 130.78
  4. Step 4: Simplify right side
    149.01x = 29,089.59
  5. Step 5: Solve for x
    x = 29,089.59/149.01
  6. Step 6: Final answer
    x = 195.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.