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Finding the Fourth Proportional to 637.55, 878.87 and 450.46

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Solution

The fourth proportional to 637.55, 878.87 and 450.46 is: 620.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.55 : 878.87 = 450.46 : x
  2. Step 2: Convert to fraction form
    637.55/878.87 = 450.46/x
  3. Step 3: Cross multiply
    637.55x = 878.87 × 450.46
  4. Step 4: Simplify right side
    637.55x = 395,894.71
  5. Step 5: Solve for x
    x = 395,894.71/637.55
  6. Step 6: Final answer
    x = 620.97

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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.