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Finding the Fourth Proportional to 454.92, 627.08 and 417.64

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Solution

The fourth proportional to 454.92, 627.08 and 417.64 is: 575.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.92 : 627.08 = 417.64 : x
  2. Step 2: Convert to fraction form
    454.92/627.08 = 417.64/x
  3. Step 3: Cross multiply
    454.92x = 627.08 × 417.64
  4. Step 4: Simplify right side
    454.92x = 261,893.69
  5. Step 5: Solve for x
    x = 261,893.69/454.92
  6. Step 6: Final answer
    x = 575.69

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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.