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Finding the Fourth Proportional to 627.28, 864.48 and 452.32

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Solution

The fourth proportional to 627.28, 864.48 and 452.32 is: 623.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.28 : 864.48 = 452.32 : x
  2. Step 2: Convert to fraction form
    627.28/864.48 = 452.32/x
  3. Step 3: Cross multiply
    627.28x = 864.48 × 452.32
  4. Step 4: Simplify right side
    627.28x = 391,021.59
  5. Step 5: Solve for x
    x = 391,021.59/627.28
  6. Step 6: Final answer
    x = 623.36

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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.