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Finding the Fourth Proportional to 251.33, 377.42 and 155.75

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Solution

The fourth proportional to 251.33, 377.42 and 155.75 is: 233.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.33 : 377.42 = 155.75 : x
  2. Step 2: Convert to fraction form
    251.33/377.42 = 155.75/x
  3. Step 3: Cross multiply
    251.33x = 377.42 × 155.75
  4. Step 4: Simplify right side
    251.33x = 58,783.33
  5. Step 5: Solve for x
    x = 58,783.33/251.33
  6. Step 6: Final answer
    x = 233.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.