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Finding the Fourth Proportional to 466.43, 641.72 and 455.49

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Solution

The fourth proportional to 466.43, 641.72 and 455.49 is: 626.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.43 : 641.72 = 455.49 : x
  2. Step 2: Convert to fraction form
    466.43/641.72 = 455.49/x
  3. Step 3: Cross multiply
    466.43x = 641.72 × 455.49
  4. Step 4: Simplify right side
    466.43x = 292,298.18
  5. Step 5: Solve for x
    x = 292,298.18/466.43
  6. Step 6: Final answer
    x = 626.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.