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Finding the Fourth Proportional to 1,829.48, 2,742.55 and 659.21

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Solution

The fourth proportional to 1,829.48, 2,742.55 and 659.21 is: 988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,829.48 : 2,742.55 = 659.21 : x
  2. Step 2: Convert to fraction form
    1,829.48/2,742.55 = 659.21/x
  3. Step 3: Cross multiply
    1,829.48x = 2,742.55 × 659.21
  4. Step 4: Simplify right side
    1,829.48x = 1,807,901.02
  5. Step 5: Solve for x
    x = 1,807,901.02/1,829.48
  6. Step 6: Final answer
    x = 988.21

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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.