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Finding the Fourth Proportional to 277.56, 415.70 and 133.24

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Solution

The fourth proportional to 277.56, 415.70 and 133.24 is: 199.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.56 : 415.70 = 133.24 : x
  2. Step 2: Convert to fraction form
    277.56/415.70 = 133.24/x
  3. Step 3: Cross multiply
    277.56x = 415.70 × 133.24
  4. Step 4: Simplify right side
    277.56x = 55,387.87
  5. Step 5: Solve for x
    x = 55,387.87/277.56
  6. Step 6: Final answer
    x = 199.55

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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.