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Finding the Fourth Proportional to 704.83, 971.88 and 455.83

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Solution

The fourth proportional to 704.83, 971.88 and 455.83 is: 628.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.83 : 971.88 = 455.83 : x
  2. Step 2: Convert to fraction form
    704.83/971.88 = 455.83/x
  3. Step 3: Cross multiply
    704.83x = 971.88 × 455.83
  4. Step 4: Simplify right side
    704.83x = 443,012.06
  5. Step 5: Solve for x
    x = 443,012.06/704.83
  6. Step 6: Final answer
    x = 628.54

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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.