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Finding the Fourth Proportional to 627.26, 866.51 and 440.69

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Solution

The fourth proportional to 627.26, 866.51 and 440.69 is: 608.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.26 : 866.51 = 440.69 : x
  2. Step 2: Convert to fraction form
    627.26/866.51 = 440.69/x
  3. Step 3: Cross multiply
    627.26x = 866.51 × 440.69
  4. Step 4: Simplify right side
    627.26x = 381,855.76
  5. Step 5: Solve for x
    x = 381,855.76/627.26
  6. Step 6: Final answer
    x = 608.77

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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.