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Finding the Fourth Proportional to 1,726.81, 2,590.62 and 494.19

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Solution

The fourth proportional to 1,726.81, 2,590.62 and 494.19 is: 741.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,726.81 : 2,590.62 = 494.19 : x
  2. Step 2: Convert to fraction form
    1,726.81/2,590.62 = 494.19/x
  3. Step 3: Cross multiply
    1,726.81x = 2,590.62 × 494.19
  4. Step 4: Simplify right side
    1,726.81x = 1,280,245.54
  5. Step 5: Solve for x
    x = 1,280,245.54/1,726.81
  6. Step 6: Final answer
    x = 741.39

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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.