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Finding the Fourth Proportional to 277.98, 417.03 and 133.74

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Solution

The fourth proportional to 277.98, 417.03 and 133.74 is: 200.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.98 : 417.03 = 133.74 : x
  2. Step 2: Convert to fraction form
    277.98/417.03 = 133.74/x
  3. Step 3: Cross multiply
    277.98x = 417.03 × 133.74
  4. Step 4: Simplify right side
    277.98x = 55,773.59
  5. Step 5: Solve for x
    x = 55,773.59/277.98
  6. Step 6: Final answer
    x = 200.64

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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.