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Finding the Fourth Proportional to 2,309.73, 3,465.20 and 666.41

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Solution

The fourth proportional to 2,309.73, 3,465.20 and 666.41 is: 999.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.73 : 3,465.20 = 666.41 : x
  2. Step 2: Convert to fraction form
    2,309.73/3,465.20 = 666.41/x
  3. Step 3: Cross multiply
    2,309.73x = 3,465.20 × 666.41
  4. Step 4: Simplify right side
    2,309.73x = 2,309,243.93
  5. Step 5: Solve for x
    x = 2,309,243.93/2,309.73
  6. Step 6: Final answer
    x = 999.79

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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.