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Finding the Fourth Proportional to 458.52, 630.96 and 455.68

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Solution

The fourth proportional to 458.52, 630.96 and 455.68 is: 627.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.52 : 630.96 = 455.68 : x
  2. Step 2: Convert to fraction form
    458.52/630.96 = 455.68/x
  3. Step 3: Cross multiply
    458.52x = 630.96 × 455.68
  4. Step 4: Simplify right side
    458.52x = 287,515.85
  5. Step 5: Solve for x
    x = 287,515.85/458.52
  6. Step 6: Final answer
    x = 627.05

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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.