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Finding the Fourth Proportional to 636.93, 952.43 and 453.78

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Solution

The fourth proportional to 636.93, 952.43 and 453.78 is: 678.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.93 : 952.43 = 453.78 : x
  2. Step 2: Convert to fraction form
    636.93/952.43 = 453.78/x
  3. Step 3: Cross multiply
    636.93x = 952.43 × 453.78
  4. Step 4: Simplify right side
    636.93x = 432,191.42
  5. Step 5: Solve for x
    x = 432,191.42/636.93
  6. Step 6: Final answer
    x = 678.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.