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Finding the Fourth Proportional to 720.05, 992.69 and 704.52

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Solution

The fourth proportional to 720.05, 992.69 and 704.52 is: 971.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.05 : 992.69 = 704.52 : x
  2. Step 2: Convert to fraction form
    720.05/992.69 = 704.52/x
  3. Step 3: Cross multiply
    720.05x = 992.69 × 704.52
  4. Step 4: Simplify right side
    720.05x = 699,369.08
  5. Step 5: Solve for x
    x = 699,369.08/720.05
  6. Step 6: Final answer
    x = 971.29

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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.