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Finding the Fourth Proportional to 1,372.85, 2,058.02 and 540.48

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Solution

The fourth proportional to 1,372.85, 2,058.02 and 540.48 is: 810.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.85 : 2,058.02 = 540.48 : x
  2. Step 2: Convert to fraction form
    1,372.85/2,058.02 = 540.48/x
  3. Step 3: Cross multiply
    1,372.85x = 2,058.02 × 540.48
  4. Step 4: Simplify right side
    1,372.85x = 1,112,318.65
  5. Step 5: Solve for x
    x = 1,112,318.65/1,372.85
  6. Step 6: Final answer
    x = 810.23

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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.