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Finding the Fourth Proportional to 704.88, 971.83 and 578.38

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Solution

The fourth proportional to 704.88, 971.83 and 578.38 is: 797.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.88 : 971.83 = 578.38 : x
  2. Step 2: Convert to fraction form
    704.88/971.83 = 578.38/x
  3. Step 3: Cross multiply
    704.88x = 971.83 × 578.38
  4. Step 4: Simplify right side
    704.88x = 562,087.04
  5. Step 5: Solve for x
    x = 562,087.04/704.88
  6. Step 6: Final answer
    x = 797.42

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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.