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Finding the Fourth Proportional to 627.80, 864.68 and 544.92

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Solution

The fourth proportional to 627.80, 864.68 and 544.92 is: 750.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.80 : 864.68 = 544.92 : x
  2. Step 2: Convert to fraction form
    627.80/864.68 = 544.92/x
  3. Step 3: Cross multiply
    627.80x = 864.68 × 544.92
  4. Step 4: Simplify right side
    627.80x = 471,181.43
  5. Step 5: Solve for x
    x = 471,181.43/627.80
  6. Step 6: Final answer
    x = 750.53

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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.