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Finding the Fourth Proportional to 636.98, 954.51 and 454.76

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Solution

The fourth proportional to 636.98, 954.51 and 454.76 is: 681.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.98 : 954.51 = 454.76 : x
  2. Step 2: Convert to fraction form
    636.98/954.51 = 454.76/x
  3. Step 3: Cross multiply
    636.98x = 954.51 × 454.76
  4. Step 4: Simplify right side
    636.98x = 434,072.97
  5. Step 5: Solve for x
    x = 434,072.97/636.98
  6. Step 6: Final answer
    x = 681.45

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Why These Related Problems?

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