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Finding the Fourth Proportional to 454.19, 627.56 and 361.75

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Solution

The fourth proportional to 454.19, 627.56 and 361.75 is: 499.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.19 : 627.56 = 361.75 : x
  2. Step 2: Convert to fraction form
    454.19/627.56 = 361.75/x
  3. Step 3: Cross multiply
    454.19x = 627.56 × 361.75
  4. Step 4: Simplify right side
    454.19x = 227,019.83
  5. Step 5: Solve for x
    x = 227,019.83/454.19
  6. Step 6: Final answer
    x = 499.83

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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.