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Finding the Fourth Proportional to 1,829.21, 2,743.45 and 659.18

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Solution

The fourth proportional to 1,829.21, 2,743.45 and 659.18 is: 988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,829.21 : 2,743.45 = 659.18 : x
  2. Step 2: Convert to fraction form
    1,829.21/2,743.45 = 659.18/x
  3. Step 3: Cross multiply
    1,829.21x = 2,743.45 × 659.18
  4. Step 4: Simplify right side
    1,829.21x = 1,808,427.37
  5. Step 5: Solve for x
    x = 1,808,427.37/1,829.21
  6. Step 6: Final answer
    x = 988.64

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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.