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Finding the Fourth Proportional to 944.72, 1,304.36 and 723.28

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Solution

The fourth proportional to 944.72, 1,304.36 and 723.28 is: 998.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.72 : 1,304.36 = 723.28 : x
  2. Step 2: Convert to fraction form
    944.72/1,304.36 = 723.28/x
  3. Step 3: Cross multiply
    944.72x = 1,304.36 × 723.28
  4. Step 4: Simplify right side
    944.72x = 943,417.50
  5. Step 5: Solve for x
    x = 943,417.50/944.72
  6. Step 6: Final answer
    x = 998.62

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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.