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Finding the Fourth Proportional to 741.96, 1,022.49 and 723.74

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Solution

The fourth proportional to 741.96, 1,022.49 and 723.74 is: 997.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.96 : 1,022.49 = 723.74 : x
  2. Step 2: Convert to fraction form
    741.96/1,022.49 = 723.74/x
  3. Step 3: Cross multiply
    741.96x = 1,022.49 × 723.74
  4. Step 4: Simplify right side
    741.96x = 740,011.80
  5. Step 5: Solve for x
    x = 740,011.80/741.96
  6. Step 6: Final answer
    x = 997.37

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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.