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Finding the Fourth Proportional to 453.58, 627.58 and 395.49

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Solution

The fourth proportional to 453.58, 627.58 and 395.49 is: 547.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.58 : 627.58 = 395.49 : x
  2. Step 2: Convert to fraction form
    453.58/627.58 = 395.49/x
  3. Step 3: Cross multiply
    453.58x = 627.58 × 395.49
  4. Step 4: Simplify right side
    453.58x = 248,201.61
  5. Step 5: Solve for x
    x = 248,201.61/453.58
  6. Step 6: Final answer
    x = 547.21

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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.