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Finding the Fourth Proportional to 723.27, 991.61 and 710.15

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Solution

The fourth proportional to 723.27, 991.61 and 710.15 is: 973.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.27 : 991.61 = 710.15 : x
  2. Step 2: Convert to fraction form
    723.27/991.61 = 710.15/x
  3. Step 3: Cross multiply
    723.27x = 991.61 × 710.15
  4. Step 4: Simplify right side
    723.27x = 704,183.33
  5. Step 5: Solve for x
    x = 704,183.33/723.27
  6. Step 6: Final answer
    x = 973.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.