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Finding the Fourth Proportional to 1,731.48, 2,389.41 and 945.51

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Solution

The fourth proportional to 1,731.48, 2,389.41 and 945.51 is: 1,304.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.48 : 2,389.41 = 945.51 : x
  2. Step 2: Convert to fraction form
    1,731.48/2,389.41 = 945.51/x
  3. Step 3: Cross multiply
    1,731.48x = 2,389.41 × 945.51
  4. Step 4: Simplify right side
    1,731.48x = 2,259,211.05
  5. Step 5: Solve for x
    x = 2,259,211.05/1,731.48
  6. Step 6: Final answer
    x = 1,304.79

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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.