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Finding the Fourth Proportional to 1,817.66, 2,726.22 and 663.41

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Solution

The fourth proportional to 1,817.66, 2,726.22 and 663.41 is: 995.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.66 : 2,726.22 = 663.41 : x
  2. Step 2: Convert to fraction form
    1,817.66/2,726.22 = 663.41/x
  3. Step 3: Cross multiply
    1,817.66x = 2,726.22 × 663.41
  4. Step 4: Simplify right side
    1,817.66x = 1,808,601.61
  5. Step 5: Solve for x
    x = 1,808,601.61/1,817.66
  6. Step 6: Final answer
    x = 995.02

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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.