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Finding the Fourth Proportional to 252.59, 348.40 and 149.09

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Solution

The fourth proportional to 252.59, 348.40 and 149.09 is: 205.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.59 : 348.40 = 149.09 : x
  2. Step 2: Convert to fraction form
    252.59/348.40 = 149.09/x
  3. Step 3: Cross multiply
    252.59x = 348.40 × 149.09
  4. Step 4: Simplify right side
    252.59x = 51,942.96
  5. Step 5: Solve for x
    x = 51,942.96/252.59
  6. Step 6: Final answer
    x = 205.64

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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.