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Finding the Fourth Proportional to 544.82, 751.86 and 308.78

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Solution

The fourth proportional to 544.82, 751.86 and 308.78 is: 426.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.82 : 751.86 = 308.78 : x
  2. Step 2: Convert to fraction form
    544.82/751.86 = 308.78/x
  3. Step 3: Cross multiply
    544.82x = 751.86 × 308.78
  4. Step 4: Simplify right side
    544.82x = 232,155.57
  5. Step 5: Solve for x
    x = 232,155.57/544.82
  6. Step 6: Final answer
    x = 426.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.