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Finding the Fourth Proportional to 454.75, 627.68 and 268.35

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Solution

The fourth proportional to 454.75, 627.68 and 268.35 is: 370.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.75 : 627.68 = 268.35 : x
  2. Step 2: Convert to fraction form
    454.75/627.68 = 268.35/x
  3. Step 3: Cross multiply
    454.75x = 627.68 × 268.35
  4. Step 4: Simplify right side
    454.75x = 168,434.79
  5. Step 5: Solve for x
    x = 168,434.79/454.75
  6. Step 6: Final answer
    x = 370.39

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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.