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Finding the Fourth Proportional to 1,669.78, 2,304.43 and 923.81

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Solution

The fourth proportional to 1,669.78, 2,304.43 and 923.81 is: 1,274.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.78 : 2,304.43 = 923.81 : x
  2. Step 2: Convert to fraction form
    1,669.78/2,304.43 = 923.81/x
  3. Step 3: Cross multiply
    1,669.78x = 2,304.43 × 923.81
  4. Step 4: Simplify right side
    1,669.78x = 2,128,855.48
  5. Step 5: Solve for x
    x = 2,128,855.48/1,669.78
  6. Step 6: Final answer
    x = 1,274.93

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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.