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Finding the Fourth Proportional to 1,729, 2,383.14 and 1,308.61

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Solution

The fourth proportional to 1,729, 2,383.14 and 1,308.61 is: 1,803.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729 : 2,383.14 = 1,308.61 : x
  2. Step 2: Convert to fraction form
    1,729/2,383.14 = 1,308.61/x
  3. Step 3: Cross multiply
    1,729x = 2,383.14 × 1,308.61
  4. Step 4: Simplify right side
    1,729x = 3,118,600.84
  5. Step 5: Solve for x
    x = 3,118,600.84/1,729
  6. Step 6: Final answer
    x = 1,803.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.