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Finding the Fourth Proportional to 544.64, 816.96 and 133.78

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Solution

The fourth proportional to 544.64, 816.96 and 133.78 is: 200.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.64 : 816.96 = 133.78 : x
  2. Step 2: Convert to fraction form
    544.64/816.96 = 133.78/x
  3. Step 3: Cross multiply
    544.64x = 816.96 × 133.78
  4. Step 4: Simplify right side
    544.64x = 109,288.82
  5. Step 5: Solve for x
    x = 109,288.82/544.64
  6. Step 6: Final answer
    x = 200.66

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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.