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Finding the Fourth Proportional to 1,589.98, 2,385.33 and 494.23

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Solution

The fourth proportional to 1,589.98, 2,385.33 and 494.23 is: 741.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.98 : 2,385.33 = 494.23 : x
  2. Step 2: Convert to fraction form
    1,589.98/2,385.33 = 494.23/x
  3. Step 3: Cross multiply
    1,589.98x = 2,385.33 × 494.23
  4. Step 4: Simplify right side
    1,589.98x = 1,178,901.65
  5. Step 5: Solve for x
    x = 1,178,901.65/1,589.98
  6. Step 6: Final answer
    x = 741.46

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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.