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Finding the Fourth Proportional to 704.11, 971.89 and 455.44

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Solution

The fourth proportional to 704.11, 971.89 and 455.44 is: 628.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.11 : 971.89 = 455.44 : x
  2. Step 2: Convert to fraction form
    704.11/971.89 = 455.44/x
  3. Step 3: Cross multiply
    704.11x = 971.89 × 455.44
  4. Step 4: Simplify right side
    704.11x = 442,637.58
  5. Step 5: Solve for x
    x = 442,637.58/704.11
  6. Step 6: Final answer
    x = 628.65

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Why These Related Problems?

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