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Finding the Fourth Proportional to 704.22, 971.79 and 442.38

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Solution

The fourth proportional to 704.22, 971.79 and 442.38 is: 610.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.22 : 971.79 = 442.38 : x
  2. Step 2: Convert to fraction form
    704.22/971.79 = 442.38/x
  3. Step 3: Cross multiply
    704.22x = 971.79 × 442.38
  4. Step 4: Simplify right side
    704.22x = 429,900.46
  5. Step 5: Solve for x
    x = 429,900.46/704.22
  6. Step 6: Final answer
    x = 610.46

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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.