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Finding the Fourth Proportional to 704.73, 972.14 and 439.08

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Solution

The fourth proportional to 704.73, 972.14 and 439.08 is: 605.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.73 : 972.14 = 439.08 : x
  2. Step 2: Convert to fraction form
    704.73/972.14 = 439.08/x
  3. Step 3: Cross multiply
    704.73x = 972.14 × 439.08
  4. Step 4: Simplify right side
    704.73x = 426,845.04
  5. Step 5: Solve for x
    x = 426,845.04/704.73
  6. Step 6: Final answer
    x = 605.69

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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.