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Finding the Fourth Proportional to 277.88, 416.86 and 133.50

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Solution

The fourth proportional to 277.88, 416.86 and 133.50 is: 200.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.88 : 416.86 = 133.50 : x
  2. Step 2: Convert to fraction form
    277.88/416.86 = 133.50/x
  3. Step 3: Cross multiply
    277.88x = 416.86 × 133.50
  4. Step 4: Simplify right side
    277.88x = 55,650.48
  5. Step 5: Solve for x
    x = 55,650.48/277.88
  6. Step 6: Final answer
    x = 200.27

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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.