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Finding the Fourth Proportional to 722.52, 991.44 and 709.56

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Solution

The fourth proportional to 722.52, 991.44 and 709.56 is: 973.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.52 : 991.44 = 709.56 : x
  2. Step 2: Convert to fraction form
    722.52/991.44 = 709.56/x
  3. Step 3: Cross multiply
    722.52x = 991.44 × 709.56
  4. Step 4: Simplify right side
    722.52x = 703,486.17
  5. Step 5: Solve for x
    x = 703,486.17/722.52
  6. Step 6: Final answer
    x = 973.66

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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.