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Finding the Fourth Proportional to 1,371.97, 2,058.78 and 506.89

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Solution

The fourth proportional to 1,371.97, 2,058.78 and 506.89 is: 760.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.97 : 2,058.78 = 506.89 : x
  2. Step 2: Convert to fraction form
    1,371.97/2,058.78 = 506.89/x
  3. Step 3: Cross multiply
    1,371.97x = 2,058.78 × 506.89
  4. Step 4: Simplify right side
    1,371.97x = 1,043,574.99
  5. Step 5: Solve for x
    x = 1,043,574.99/1,371.97
  6. Step 6: Final answer
    x = 760.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.