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Finding the Fourth Proportional to 637.59, 953.87 and 455.43

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Solution

The fourth proportional to 637.59, 953.87 and 455.43 is: 681.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.59 : 953.87 = 455.43 : x
  2. Step 2: Convert to fraction form
    637.59/953.87 = 455.43/x
  3. Step 3: Cross multiply
    637.59x = 953.87 × 455.43
  4. Step 4: Simplify right side
    637.59x = 434,418.74
  5. Step 5: Solve for x
    x = 434,418.74/637.59
  6. Step 6: Final answer
    x = 681.34

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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.