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Finding the Fourth Proportional to 544.54, 816.78 and 133.65

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Solution

The fourth proportional to 544.54, 816.78 and 133.65 is: 200.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.54 : 816.78 = 133.65 : x
  2. Step 2: Convert to fraction form
    544.54/816.78 = 133.65/x
  3. Step 3: Cross multiply
    544.54x = 816.78 × 133.65
  4. Step 4: Simplify right side
    544.54x = 109,162.65
  5. Step 5: Solve for x
    x = 109,162.65/544.54
  6. Step 6: Final answer
    x = 200.47

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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.