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Finding the Fourth Proportional to 1,726.42, 2,589.72 and 494.02

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Solution

The fourth proportional to 1,726.42, 2,589.72 and 494.02 is: 741.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,726.42 : 2,589.72 = 494.02 : x
  2. Step 2: Convert to fraction form
    1,726.42/2,589.72 = 494.02/x
  3. Step 3: Cross multiply
    1,726.42x = 2,589.72 × 494.02
  4. Step 4: Simplify right side
    1,726.42x = 1,279,373.47
  5. Step 5: Solve for x
    x = 1,279,373.47/1,726.42
  6. Step 6: Final answer
    x = 741.06

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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.