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Finding the Fourth Proportional to 627.90, 866.72 and 453.34

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Solution

The fourth proportional to 627.90, 866.72 and 453.34 is: 625.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.90 : 866.72 = 453.34 : x
  2. Step 2: Convert to fraction form
    627.90/866.72 = 453.34/x
  3. Step 3: Cross multiply
    627.90x = 866.72 × 453.34
  4. Step 4: Simplify right side
    627.90x = 392,918.84
  5. Step 5: Solve for x
    x = 392,918.84/627.90
  6. Step 6: Final answer
    x = 625.77

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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.