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Finding the Fourth Proportional to 1,729.62, 2,588.87 and 906.74

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Solution

The fourth proportional to 1,729.62, 2,588.87 and 906.74 is: 1,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.62 : 2,588.87 = 906.74 : x
  2. Step 2: Convert to fraction form
    1,729.62/2,588.87 = 906.74/x
  3. Step 3: Cross multiply
    1,729.62x = 2,588.87 × 906.74
  4. Step 4: Simplify right side
    1,729.62x = 2,347,431.98
  5. Step 5: Solve for x
    x = 2,347,431.98/1,729.62
  6. Step 6: Final answer
    x = 1,357.20

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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.