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Finding the Fourth Proportional to 454.38, 627.04 and 247.38

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Solution

The fourth proportional to 454.38, 627.04 and 247.38 is: 341.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.38 : 627.04 = 247.38 : x
  2. Step 2: Convert to fraction form
    454.38/627.04 = 247.38/x
  3. Step 3: Cross multiply
    454.38x = 627.04 × 247.38
  4. Step 4: Simplify right side
    454.38x = 155,114.02
  5. Step 5: Solve for x
    x = 155,114.02/454.38
  6. Step 6: Final answer
    x = 341.38

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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.