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Finding the Fourth Proportional to 1,726.86, 2,590.44 and 494.37

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Solution

The fourth proportional to 1,726.86, 2,590.44 and 494.37 is: 741.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,726.86 : 2,590.44 = 494.37 : x
  2. Step 2: Convert to fraction form
    1,726.86/2,590.44 = 494.37/x
  3. Step 3: Cross multiply
    1,726.86x = 2,590.44 × 494.37
  4. Step 4: Simplify right side
    1,726.86x = 1,280,635.82
  5. Step 5: Solve for x
    x = 1,280,635.82/1,726.86
  6. Step 6: Final answer
    x = 741.60

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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.